Thus why these ships have to be aerodynamic, likely with an assist from an EM shield as a supplement, not forgetting that regolith makes good shipskin.
Ionizing radiation and a magnetic field which accelerates matter perpendicular to the nose axis of the ship can get out the way some smaller objects. Scouting robot ships would be needed for larger objects.
Finally something I can sit through well I'm sitting in surgery recovery. Your a champ bud and thanks for taking my mind off this tube sticking out of my lungs
I think it’s ironic that out of all sci-fi franchises Avatar is the one which has spaceships slower than light. It takes them nearly 7 years to reach Alpha Centauri stated in the movie. And if you look up the behind the scenes design, it takes months to accelerate and months to decelerate and only reaches 70% light speed at its max. Which of course is still way beyond what we know how to do but as far as sci-fi goes it at least sticks with known physics.
@ no I didn’t because the alien franchise has much faster than light travel. The star system they arrive at is over 30 light years from earth but they’re only an 11 month trip from earth. And in aliens it only takes them a few weeks with the Suloco (and that’s not relativistic time, it was a rescue mission). They don’t explicitly state in the movie what their drives are but it’s supposed to convert the ship and crew into tachyons
This just seems like a list of reasons why, one way or another, we're not, practically, travelling anywhere at all: until - and if - we develop a way to totally bypass directly interacting with space-time, altogether.
More of a reason why we have to find a swetspot between the challenges of going faster and the challenges of keeping the ship and crew alive and on mission.
@isaacarthurSFIA Well, yes. That's the other - and, I would say, far more significant - thing. "Faster"? A worm is faster than a snail - and, in my view, that's the order of terms we'll have to stare in the face, probably for centuries. Either we get to FTL, or we're going to be missing all the parties. So, until that branch of sci-fi stops being quite so stubbornly sci-fi, I say we should focus on supporting Life. Speaking _generally,_ [I do love your work], I see a lot of energy expended on different math for the hypothetical warp drive that somebody might make 3 thousand years from now, if they find a dark matter or a tachyon to charge it up with. Of course - that's all nice: I just wish I saw as much energy devoted to the issue of sustaining Life. As far as we know, there's nothing for us to breath, nothing for us to drink and nothing for us to eat - anywhere, but here. If we want to go on a little trip off this world, we're going to have to take all that with us, or make it on the way; and/or find a way to reliably put ourselves into hibernation and wake ourselves back up again. Personally, I think all that piece has a higher priority.
UAP reportedly do posses this tech and can dial it to fly the sub light speeds and change directions almost instantly. Too bad nobody is gonna share the blueprints because no one needs crazy neighbor
I would really like to see an episode about interplanetary ships that can reach ~0.1% the speed of light (300km/s). It would be interesting to hear about the technologies that would allow that, the considerations for optimal acceleration G's (1G for 8 hours to accelerate and then 8 hours of 1G to decelerate towards destination?), whether waiting for a "window" for planets to get closer to one another or just fly whenever you want, the effect on space tourism or settlement, etc.
Yep, I'd meant to do them one year later but it works out to be just abut 1 3 months since the nebula ones all come out at the top of the month and then arrive here usually on the last Sunday in place of the livestream I used to do.
To solve your dust issue, there is also the possibility of having long vacuum tubes where spaceships travel at relativistic velocities. You briefly mentioned this option in your intergalactic travel episode. In addition there is also the option of launching spaceships off relativistic launch rings, which are a few lightyears in diameter. This has the advantage of being able to store the kinetic energy in rotational energy and gain/give it to other ships. It would be similar to how a skyhook is like an orbital battery.
I don't think that would work. First, how would you get the few atoms or molecules sucked out of the tube? A pump does not work in those conditions. Second, the tube would quickly end up with *more* stuff in it than the space around it, because spaceships will inevitably leak or shed as they go through the tube. Also, cosmic rays would knock particles off the tube itself, many of which will end up inside the tube.
Future production note: 15:47 You really should have flipped the small diagram (bottom left) so the arrows for neg- and pos-mass circles matched the main gravitational dipole diagram.
Maybe it's the ganja I'm smoking on right now, but I have a sneaky suspicion that when we finally find a way to travel outside of our solar system in the course of a normal human life span, accelerating through space at near relativistic speeds will basically be the ships impulse power and not our main mode of travel. Going THROUGH space-time takes too long for any kind of deep space exploration and WARPING space-time itself with an Alcubierre drive would require the use of exotic matter or expert manipulation of dark energy (which we don't currently possess). Maybe I'm just completely stoned right now, but what if the way forward is going OUTSIDE of space-time and bypassing the need to deal with the speed of light, causality and the Principle of Locality altogether. If all points in a Virtual World are equidistant with respect to the source of the simulation, than a deeper reality that is the source of space-time would be at the exact same distance to every point in the universe. Similar to how two separate pixels on a computer screen can simultaneously interact with each other at a distance (because they’re both connected and equidistant to their source, the physical hardware), maybe the reason why entangled particles are able to interact simultaneously across vast distances because they're both connected and equidistant to their source, the deeper reality. Which might also explain why we have to use the language of statistics and probabilities to describe a sub-microscopic quantum state, these particles are just vibrating in and out of this deeper reality, jumping all over the place. Oh wait, my high is coming down and I just realized that accessing this hypothetical deeper reality would be WAY MORE DIFFICULT than either brilliantly engineering ultra-relativistic ships or somehow getting our hands on negative mass for the warp drive. It'd be like software code trying to escape the computer that runs it without any outside help. Here I am theorizing over hypothetical type 3 civilization technology while we're still using fossil fuels for energy. I'm getting way ahead of myself. I love this channel so much. I normally binge this channel when my mind is racing too much and I trying to fall asleep, but this channel is on a whole different level when marijuana is involved.
I read a sf story once, where people using relativistic ships to travel to Earth colonies in other solar systems had a city dedicated to them on Earth. Civilizations and cultures would change around it, but the city itself was maintained and kept unchanging so the travelers would have a familiar home to return to after their long journeys. I always thougth it was an interesting concept, although I don't know if it could actually be implemented in reality.
5:35 As time slowed down, the rate of time speed that you have to react to an emergency speeds up. To you, you have less time to do something about the danger.
And the fun part of spending the first normal speed mass colony. .they have the situation of either that is top of sciences or....we figured out faster than light by 30 generations when they get to target system
With regards to C (the speed of Causality) being impossible reach by thrust, is because the speed for the atoms at the back of your ship can tell the next set to move forwards is C
Targeting Stellasers: Solar Laser Array Propulsion Sail System: (10% speed of light) for solar system travel is spot on IMHO. After slowing down, one could turn on the nukes for local system travel. Definitely can vizulize this type of solar system travel in future. For Fun : Two SYC-FI examples: 1) Starwars - millenium falcon (HyperSpace Travel) = Stellaser sail system. 2) Startek: = impulse power (nuke for local travel). Saved this vid along with many other of your vids, Thanks Isaac Arthur. 😊
Well, if the thing wasn't also massively expensive to build or operate, I can see nations and possibly non-state entities busting out to colonize distant locations that most folks back here wouldn't even know about (and the whole idea would be untraceable escape, for some), even with otherwise existing tech...an almost instant human diaspora. Especially if the thing is FTL *enough* to easily leave the galaxy / local group / red-shift horizon... (Could that be a partial Fermi Paradox solution? Civilizations get FTL, then rapidly spread *too thinly* to easily detect?)
@@stardolphin2 Presumably any instantaneous FTL system, that was that practical and economic to run would also be used for long distance communication. No need for giant radio wave beacons if you just have a portal you can send them through.
@@guntguardian3771 Oh, well, If we're talking something Stargate-ish, then yeah, just run fiber optic cables through them. One still has to establish the other end though. And about that... Physicist Kip Thorne himself (who, among other things, was an adviser on 'Contact' and 'Interstellar') once wrote that *if you could* produce a wormhole with both connected ends here, you could take one of them away in a ship at large fractions of c, and not only could you transfer people and supplies (and even fuel?) back and forth between ship and Earth *while in transit,* but because the moving wormhole is tied to the reference frame of the ship, it will 'arrive' in the ship's shortened time-dilated time (which could be just a few years), and not the longer, near-lightspeed time (which could be a few thousand years)... That's *effectively* FTL, without a ship traveling *actually* FTL...and you've still got that wormhole leading back home with you, at your destination.
Awesome video! Like you I was disappointed when I found that it is unlikely that warp drive and other forms of FTL are unlikely. I think the lighthuggers from Revelation Space are arguably one of the best depictions of ultra relativistic travel in fiction. Anti-matter rockets seem like a logical candidate for ultra relativistic travel. Maybe the first stellar pioneers will get to other systems using antimatter and built stelasers and laser highways for larger ships to follow.
@UpperDarbyDetailing technically I don't think we can know immortality is impossible or even that 50,000 years old is impossible--which is functionally immortal. With enough technology complementing the body, I don't see why it can't be
High speed with close encounter to any pieces of material that gets in the way of your spaceship possesses real problems for your spaceship. Would definitely require a forcefield to provide protection for spaceships to travel at high speeds through the universe.
🎶 Now the speed of C is a wall they say, when you're pushing the speed of light. And it cuts you off from your yesterdays, pushing the speed of light. But you know someday you're gonna win that race and run back the years to your starting place, and you’ll stay awhile, before you're back in space, pushing the speed of light! 🎶
Now the big ships fly to a hundred suns By pushing the speed of light And they want good men for the deep space runs Pushing the speed of light And the pay is good, and you're young and strong And you tell yourself that it won't be long So you sign on board, hear the drive's deep song Pushing the speed of light Pushing the speed of light And you've left behind you the world of men With no way in space to go home again When you're pushing the speed of light Pushing the speed of light Now it's two months out and it's two months back When you're pushing the speed of light Twenty years on your homeworld's track Pushing the speed of light And your friends are gone and your lovers too And there's damn-all left that you can do And you try to lie, but you know it's true Pushing the speed of light Pushing the speed of light So you sign back on for another run Of pushing the speed of light And you swear to God that your pushing's done Pushing the speed of light But that one run turns into four or five And your heart beats time to the humming drive And there's nothing left keeps you alive But pushing the speed of light Pushing the speed of light Now you've spread your seed with the star drive's flame By pushing the speed of light Left sons behind you to carry your name Pushing the speed of light And you watch them age, and you watch them die As you race the light-wind across the sky And the gods are silent when you ask them, Why? Pushing the speed of light Pushing the speed of light Now, the speed of c is a wall, they say When you're pushing the speed of light That cuts you off from yesterday Pushing the speed of light But you know someday you're gonna win that race And fly back the years to your starting space And you'll stay awhile 'fore you're back in space Pushing the speed of light Pushing the speed of light And you've left behind you the world of men With no way in Hell to go home again When you're pushing the speed of light Pushing the speed of light Lyrics by Julia Ecklar
This is going to be one of those ‘Isaac Bite’ episodes I wish we talked more of. Honestly, I can settle on 99.99%+ of Light Speed so long as Isaac episodes can be pinged to my subscription box at 100% the speed of light 😌
I thought travelling near light speed IS effectively impossible...viscosity increases with kinetic energy and I have no idea what happens to electron shells in say...gold...where the electrons are "moving" 60% of lightspeed and you try to exceed that.
Nothing special. Relative to you the electrons are still moving at 60% of light speed. Relative to outside observers the electrons are moving at close to light speed. But also, the electrons do have angular momentum, but the solutions are mostly stationary. Is a mostly stationary wave of probability really moving something physical? I don't think the effect would be that notable. The main point of relativity is that nothing viewed under any observer can move faster than light.
Let's make a thought experiment: For the OMG particle, moving at hyper-relativistic speeds, the entire planet was moving at hyper-relativistic speeds towards it. The gold or heavier elements were perfectly fine.
@@vidal9747 yeah...except it's the OMG "particle" not the OMG atom. I can't link to the study itself but, ua-cam.com/video/VKmUNli0Kwg/v-deo.htmlsi=gC4hUC195BqMhp2Y
It's impossible up until we figure it out. One day kids will be taking field trips to Alpha Centauri in the morning and will be back on time for dinner. #Warp 9
16:16 The problem is that gravity is weird. I don't think we have the whole picture yet. Also, the universe don't have to curve to human sensibilities. But, it is still weird negative mass doesn't seems to exist. I also feel the same about magnetic monopoles. But, I do hope we understand it better.
*Higgs Bubble:* One extreme long shot I hold out hope for in the very distant future is a Higgs bubble. If the Higgs does what they think and we can somehow figure out a way to create a Higgs bubble that negates mass from anything within it, and that doesn't destroy matter within the bubble, then we should be able to achieve light speed with next to no energy expenditure beyond the energy cost of maintaining the bubble. *Blackhole Drive:* If we could create and collapse a black hole at will, then we could do that just in front of a ship for a fraction of a second but long enough for there to be a gravitational pull forward on the ship. If we were able to do it in rapid succession, we should be able to achieve close to light speed with the only fuel being what's required to operate the blackhole equipment. In order to slow down the strobing blackhole would be generated behind the ship. This would also resolve the problem of forward shielding except for the slowing down phase. when the hole is behind the ship's direction of travel.
I loved the concept from heroic age anime, Of the star way. A column of space that links 2 stars together through gravitational pull on each other. Where time inside of that point speeds up rapidly compared to the outside universe allowing you to travel without breaking the laws of physics at what would appear to be insane speeds allowing you to traverse the Distance between those 2 starsAt near light speed but appear to be going several times the speed of light speed to the outside universe.
Timestamps (Powered by Merlin AI) 00:05 - Traveling near light speed is extraordinarily challenging and currently unachievable. 02:45 - Ultra-relativistic speeds enable significant kinetic energy and time dilation effects. 05:31 - Rocket equation limits speed; alternatives exist for faster spaceships. 08:11 - Exploring efficient propulsion for ultra-relativistic space travel. 10:43 - Antimatter enables advanced propulsion techniques for fast interstellar travel. 13:15 - Exploring advanced propulsion methods for rapid interstellar travel. 15:49 - Exploring advanced propulsion methods for ultra-relativistic spaceships. 18:20 - Ultra-relativistic speeds face significant challenges from particle collisions. 20:46 - Exploring the future of space habitats and agricultural orbital farms.
Some fun thoughts here; We might accomplish luminal space travel via a machine resembling the "mass relays" of Mass Effect or the "heighliners" of the new Villeneuve variety. The ship would be "collapsed" into a single "superparticle" containing all of the information of the ship's state, plus a programmed trajectory and a decay factor. The particle would travel at light speed until the decay causes it to expand into the original ship. This way the ship could be aimed at it's destination with a decay timed to cause it to emerge at the desired location. It would seem like instantaneous teleportation for the ship and it's crew. With this kind of system, we could easily get around the Solar System, and possibly even launch from the surface of planets, especially airless ones. It would be feasible to send probes, and even manned vehicles to nearby star systems, within reason considering that the time delay would still quickly become cumbersome. No worse than radio communication, but tough to run a company or government across that distance. Robotic mining machines probably wouldn't care, and could just start sending useful material back home straight into a safe parking orbit. Say, I wonder if ancient aliens built our astroid belt that way? ;) Given the crushing effects of wormholes and the necessity for exotic matter to build them, it doesn't seem like we could ever just fly through a naked wormhole Stargate-style. But, we might still achieve SUPERluminal space travel by combining wormholes with luminal travel and passing through as "superparticles". However, there are concerns that there could be a kind of "conservation of time" effect that prevents wormhole travel from being faster than light, or if it IS faster than light, one finds themselves trapped in a different era of time from the one they originated in such as depicted in the science of Orion's Arm wiki.
A random thought pops into my head; if light experiences no time, then how is is that it can be generated, and then be absorbed? It hadn't always existed, it no longer exists, but it did exist for a time. But no time for itself? Is there a clue as to what time is therin?
But doesn't mass increase also apply to reaction mass? When you accelerate protons to near light speed in your mass driver you can put a lot more push into them than their rest mass.
Have you read that paper reconciling tachyons with relativity by doing something with the math of the ground states and showing it doesn’t have to have negative energy?
@ this one was promoted a lot though. I don’t know the exact title, but it’s the first thing that comes up if you search tachyons reconciled with relativity. Not the actual paper just articles on it. I never read the actual paper. I’m no physicist so I couldn’t adequately evaluate the math if I wanted to anyways.
I just read an interesting article about relativistic effects on the viscosity of fluids. That might have real implications for animals or humans or anything alive really
What about using the captured energy from a solar powered laser to generate antimatter fuel onboard? If E=mc^2, then it should work in reverse if you cram enough energy into a single point, right? Thus, if you can re-fuel your ship mid trip with generated antimatter and ram-scooped hydrogen at the front of the ship, wouldn't it be possible to use this fuel to accelerate the ship once it's out of range of the lasers?
there was a physicist named robert enzmann who proposed a ship called the echolance, which uses nuclear reactors to power a particle accelerator for propulsion. the speed of the ship is over 90% light speed.
17:41 Talk about a flex when you can reference a (as of this writing) 7 year-old-episode that was so well done it still works just fine as a primer on using lasers to push light sails around the galaxy. Back in the mid 90s, I played with this concept in an online email team called the Lunar Institute of Technology (LIT) and I called it the Trade Winds concept. I doubt I'm the first to think of it since Robert L. Forward did so much foundational work (his out-of-print Starflight Handbook is still inspirational). Anyway, what brought me to this episode is I'm trying to come up with a LitRPG-type sci-fi story because I'm constitutionally incapable of using fantasy tech in my science fiction stories. At that, I still want the tale to break as few rules as possible. Thanks as always Isaac for what you do!
@isaacarthurSFIA OMG I've gotten a reply from the man himself! Swoon! You sir have not only made my day, you have made my hole weak! I've been a follower and subscriber from the very beginning and just hope you know how much joy, optimism, education and light you bring to the lives of millions around the globe. You are a fine role model, a scholar and a gentleman and I appreciate your work enormously. Thanks, Mr Arthur, you *rock*! Love from London, England, to you and yours. FF x PS yes, I really did mean to write 'hole weak' rather than 'whole week' - your other female fans will understand what I mean (and don't forget to kegal, sisters!)
Would it be possible to concentrate enough light ahead of the ship with the right shape so that it both pulls the ship forwards with it's gravity, and lenses the light towards the back for additional trust; and with the additional benefit of vaporizing a lot of the dust that might be on the way? I mean not a full kugelblitz, but something that needs a constant inflow of light to be sustained and won't risk growing independently.
you say "if you can send information you can just send a ship instead" but would you as a passenger want to be sent as information would this not result in the teleportation conundrum, of anihilating the original and a clone being made at the destination and then wondering if your still you at the destination
I'm not sure I'm quite so into Inertial Dampeners, since my mass would also change into Kinetic Energy which is heat; and I'm kinda sensitive to the amount of heat energy I am.
an idea for an episode: what if we develop a tech so efficient, we can generate "usable" electricity just from the light that hits us from the stars that are lots of light years far away from us. think a super efficient solar pannel but that can get some 1000W/h per 10m² from the light emited by all the stars far away in the space that bounces on it.
Kinetic energy being the reason that some particles, which would normally decay by the time it took them to cross the diameter of an atomic nucleus, can reach detectors a meter away from the collision that created them... blew my mind. But then how do they actually know the half-life of those transient particles? Doesn't a detector kinda interrupt the decay process? Did someone a long time ago do an experiment with varying detector distances or is it just inferred based on theory? Anyway. Cool explanation. Long-time fan of the channel!
What happens when we turn on the headlights while going the speed of light? One argument is that from the drivers seat, the photons from the headlights go the speed of light realize to the vehicle. All those nerds not in the car say the light never came on.
The other limiting factor not touched in this video is acceleration. How many Gs can a human tollerate for waht amount of time? Or put otherwise: assuming humans can live well in an 1.5G environemnt: how log would it take to accelerate a ship to 10%/90% lightspeed at an acceleration of 1.5Gs? If I'm not mistaken we're talking weaks or month already, if not more...
The strange thing is that, for the passengers. The closer you get to C the shorter the felt time is. So if you can accelerate to a very high fraction of C it would be a very short trip.
🎵 Shadows in the stars 🎶 🎶 We will not return 🎵 🎵 Humanity won't save us 🎶 🎶 At the speed of light 🎵 🎵 Shadows in the stars 🎶 🎶 We will not return 🎵 🎵 Humanity won't save us 🎶 🎶 We slip into the night 🎵
Something I considered about Hawkin radiation I never hear discussed it shouldn't we be able to have one "larger" and one small blackhole orbit each other so that time is slowed for the orbiting one giving us a means of controlling the radiation but controlling the distance of our drive Blackhole from the central blackhole it orbits. Does Hawkin radiation speed not apply to relativity or something? I would find that odd. This means if we have a tiny blackhole that should evaporate in seconds we should be able to slow that down by placing it near a second blackhole and best part is we can avoid the explosion at the end by feeding it into the main blackhole at last minute. I picture a Kepler rosette of tiny, short lived blackholes having their energy and lifespan controlled by a central longer lived and larger blackhole.
I love how we think we're going to do all this incredible stuff sometime in the near future, like a colony on Mars built by Elon Musk lol, while 2 astronauts that were supposed to be on the ISS for a few days have been stuck up there for EIGHT MONTHS! We can't even get people back from near Earth orbit, we haven't returned to the moon one time since I was a kid, and are on the verge of a disaster with satellite debris creating a chain reaction and destroying all of our current space technology. IF we ever make it off Earth it will be after we have learned to live sustainably here and solve our energy problems. It won't be in the lifetime of anyone alive today or even our grandchildren. I think it would be more like 500 to a thousand years from now if it happens at all.
I’ll give you credit for narrating your own content, which you do a great job at, rather than cop out to some cheesy phony AI bot voice. Keep up the good work.
I imagine that the advantage of ad free subscription is that you have to keep the subscribers happy instead of every sponsor who can be pushed into taking away their sponsorship of you by a powerful opponent of you or what you said.
it is apparent to me that there is a simple solution. Selective mass subtraction. reducing or completely canceling out mass would kill the tyranny of the rocket.
Sounds like it would be worth to rush your smaller building robots, not your colony ship, you have no reason to show up until some of that Dyson swarm is built.
Realize that we move through space/time like a trout in the stream. Like the fish, we move through without 'seeing' it. The difference is, we are more aware of it. The level of influence is similar (CURSE YOU THURSDAYS!)
This vid is hype listening at work. Also trying to be the first solo civilian engineer to make functional power armor anybody trying to tap in on the cost?
Great video! Curious if there are enough new discoveries to re-visit the interstellar highway? Ever since I saw the original I've only found the highway concept in "Pushing Ice". Once the routes to the nearest multi-dozen stars you could have entire book series in that setting.
Define 'particle.' That could possibly mean *any* rocket engine, or somewhat more specifically an ion engine... Research particle accelerators would have an utterly lousy thrust-to-weight ratio. Insanely high exhaust velocity, but insanely high mass to get infinitesimal thrust.
What about a series of mass drivers within the solar system with a ring mass driver the circumference of the entire solar system? What would be the max speed of such systems?
For ultra-relativsitc speed I think you want to avoid anything potnetially near the ship, hence beaming energy as opposed to a rail of some sort, but that's jsut my opinion.
@@isaacarthurSFIA I agree. I realize the video was purely about ultra-relativistic speed. I was thinking of a hybrid system, if it at all made since. I just did not communicate that I don't see mass drivers as a viable stand-alone ultra-relativistic speed method, just a kickstarter.
One space pebble hitting your ship, even at 1% of light speed, is going to make a very big Boom indeed
Thus why these ships have to be aerodynamic, likely with an assist from an EM shield as a supplement, not forgetting that regolith makes good shipskin.
Ionizing radiation and a magnetic field which accelerates matter perpendicular to the nose axis of the ship can get out the way some smaller objects. Scouting robot ships would be needed for larger objects.
Finally something I can sit through well I'm sitting in surgery recovery. Your a champ bud and thanks for taking my mind off this tube sticking out of my lungs
Feel better bro!
Hope the surgery went well and you recover swiftly
Get well soon
Ugh, here's hoping for a quick recovery, glad the episode helped distract you for a bit :)
3:06 a very assertive German right there 😀
NEIN,NEIN,NEIN....
Genau.
Good one 😂
I wanted to make that joke... 🤣
I think it’s ironic that out of all sci-fi franchises Avatar is the one which has spaceships slower than light. It takes them nearly 7 years to reach Alpha Centauri stated in the movie. And if you look up the behind the scenes design, it takes months to accelerate and months to decelerate and only reaches 70% light speed at its max. Which of course is still way beyond what we know how to do but as far as sci-fi goes it at least sticks with known physics.
Yeah they use antimatter fusion drive.
You forgot about the Alien franchise
@ no I didn’t because the alien franchise has much faster than light travel. The star system they arrive at is over 30 light years from earth but they’re only an 11 month trip from earth. And in aliens it only takes them a few weeks with the Suloco (and that’s not relativistic time, it was a rescue mission). They don’t explicitly state in the movie what their drives are but it’s supposed to convert the ship and crew into tachyons
This just seems like a list of reasons why, one way or another, we're not, practically, travelling anywhere at all: until - and if - we develop a way to totally bypass directly interacting with space-time, altogether.
More of a reason why we have to find a swetspot between the challenges of going faster and the challenges of keeping the ship and crew alive and on mission.
@isaacarthurSFIA Well, yes. That's the other - and, I would say, far more significant - thing.
"Faster"? A worm is faster than a snail - and, in my view, that's the order of terms we'll have to stare in the face, probably for centuries. Either we get to FTL, or we're going to be missing all the parties. So, until that branch of sci-fi stops being quite so stubbornly sci-fi, I say we should focus on supporting Life.
Speaking _generally,_ [I do love your work], I see a lot of energy expended on different math for the hypothetical warp drive that somebody might make 3 thousand years from now, if they find a dark matter or a tachyon to charge it up with. Of course - that's all nice: I just wish I saw as much energy devoted to the issue of sustaining Life.
As far as we know, there's nothing for us to breath, nothing for us to drink and nothing for us to eat - anywhere, but here. If we want to go on a little trip off this world, we're going to have to take all that with us, or make it on the way; and/or find a way to reliably put ourselves into hibernation and wake ourselves back up again.
Personally, I think all that piece has a higher priority.
@@isaacarthurSFIAsafety third.
This is why the Warp Drive is so interesting, because there's no pushing involved.
UAP reportedly do posses this tech and can dial it to fly the sub light speeds and change directions almost instantly.
Too bad nobody is gonna share the blueprints because no one needs crazy neighbor
Fiction: i want to reach light speed
Science: Nein! Nein! Nein! Nine! Nine!
Hold my beer.
German science is the best in the world!
I would really like to see an episode about interplanetary ships that can reach ~0.1% the speed of light (300km/s). It would be interesting to hear about the technologies that would allow that, the considerations for optimal acceleration G's (1G for 8 hours to accelerate and then 8 hours of 1G to decelerate towards destination?), whether waiting for a "window" for planets to get closer to one another or just fly whenever you want, the effect on space tourism or settlement, etc.
0.1%c is a little bit more realistic, if you do a high g thermal deceleration at the surface of the target.
I appreciate Isaac sounding out every "nine" in the speed of the OMG particle
That particle came from a huge void in space.
Good to see that the nebula exclusives do eventually get released for free
Yep, I'd meant to do them one year later but it works out to be just abut 1 3 months since the nebula ones all come out at the top of the month and then arrive here usually on the last Sunday in place of the livestream I used to do.
To solve your dust issue, there is also the possibility of having long vacuum tubes where spaceships travel at relativistic velocities. You briefly mentioned this option in your intergalactic travel episode. In addition there is also the option of launching spaceships off relativistic launch rings, which are a few lightyears in diameter. This has the advantage of being able to store the kinetic energy in rotational energy and gain/give it to other ships. It would be similar to how a skyhook is like an orbital battery.
I don't think that would work. First, how would you get the few atoms or molecules sucked out of the tube? A pump does not work in those conditions. Second, the tube would quickly end up with *more* stuff in it than the space around it, because spaceships will inevitably leak or shed as they go through the tube. Also, cosmic rays would knock particles off the tube itself, many of which will end up inside the tube.
spending this much time on science fiction lore is some dedication
Future production note: 15:47 You really should have flipped the small diagram (bottom left) so the arrows for neg- and pos-mass circles matched the main gravitational dipole diagram.
Maybe it's the ganja I'm smoking on right now, but I have a sneaky suspicion that when we finally find a way to travel outside of our solar system in the course of a normal human life span, accelerating through space at near relativistic speeds will basically be the ships impulse power and not our main mode of travel. Going THROUGH space-time takes too long for any kind of deep space exploration and WARPING space-time itself with an Alcubierre drive would require the use of exotic matter or expert manipulation of dark energy (which we don't currently possess). Maybe I'm just completely stoned right now, but what if the way forward is going OUTSIDE of space-time and bypassing the need to deal with the speed of light, causality and the Principle of Locality altogether.
If all points in a Virtual World are equidistant with respect to the source of the simulation, than a deeper reality that is the source of space-time would be at the exact same distance to every point in the universe. Similar to how two separate pixels on a computer screen can simultaneously interact with each other at a distance (because they’re both connected and equidistant to their source, the physical hardware), maybe the reason why entangled particles are able to interact simultaneously across vast distances because they're both connected and equidistant to their source, the deeper reality. Which might also explain why we have to use the language of statistics and probabilities to describe a sub-microscopic quantum state, these particles are just vibrating in and out of this deeper reality, jumping all over the place.
Oh wait, my high is coming down and I just realized that accessing this hypothetical deeper reality would be WAY MORE DIFFICULT than either brilliantly engineering ultra-relativistic ships or somehow getting our hands on negative mass for the warp drive. It'd be like software code trying to escape the computer that runs it without any outside help. Here I am theorizing over hypothetical type 3 civilization technology while we're still using fossil fuels for energy. I'm getting way ahead of myself.
I love this channel so much. I normally binge this channel when my mind is racing too much and I trying to fall asleep, but this channel is on a whole different level when marijuana is involved.
I read a sf story once, where people using relativistic ships to travel to Earth colonies in other solar systems had a city dedicated to them on Earth. Civilizations and cultures would change around it, but the city itself was maintained and kept unchanging so the travelers would have a familiar home to return to after their long journeys. I always thougth it was an interesting concept, although I don't know if it could actually be implemented in reality.
Already does this is how Amish live no cars tractors live off the land
Its a neat idea though I imagine Earth would be changing too, maybe it would a dedicated one to the Earth they left?
5:35 As time slowed down, the rate of time speed that you have to react to an emergency speeds up. To you, you have less time to do something about the danger.
And the fun part of spending the first normal speed mass colony. .they have the situation of either that is top of sciences or....we figured out faster than light by 30 generations when they get to target system
At least it hedges our best. What if we DON'T figure out ftl by then?
With regards to C (the speed of Causality) being impossible reach by thrust, is because the speed for the atoms at the back of your ship can tell the next set to move forwards is C
That's why laser sails are amazing, the beam acts as a detector and snowplow.
Targeting Stellasers: Solar Laser Array Propulsion Sail System: (10% speed of light) for solar system travel is spot on IMHO.
After slowing down, one could turn on the nukes for local system travel.
Definitely can vizulize this type of solar system travel in future.
For Fun : Two SYC-FI examples:
1) Starwars - millenium falcon (HyperSpace Travel) = Stellaser sail system.
2) Startek: = impulse power (nuke for local travel).
Saved this vid along with many other of your vids, Thanks Isaac Arthur. 😊
Inertial mass is changeable? What is the theoretical science involved in that? Source? Please? I really gotta see this.
Always a pleasure to learn from Isaac Arthur
I do wonder how society would function with instantaneous FTL maybe you'll talk more about that in the upcoming hyperspace video.
Well, if the thing wasn't also massively expensive to build or operate, I can see nations and possibly non-state entities busting out to colonize distant locations that most folks back here wouldn't even know about (and the whole idea would be untraceable escape, for some), even with otherwise existing tech...an almost instant human diaspora.
Especially if the thing is FTL *enough* to easily leave the galaxy / local group / red-shift horizon...
(Could that be a partial Fermi Paradox solution? Civilizations get FTL, then rapidly spread *too thinly* to easily detect?)
@@stardolphin2
Presumably any instantaneous FTL system, that was that practical and economic to run would also be used for long distance communication. No need for giant radio wave beacons if you just have a portal you can send them through.
@@guntguardian3771 Oh, well, If we're talking something Stargate-ish, then yeah, just run fiber optic cables through them.
One still has to establish the other end though.
And about that...
Physicist Kip Thorne himself (who, among other things, was an adviser on 'Contact' and 'Interstellar') once wrote that *if you could* produce a wormhole with both connected ends here, you could take one of them away in a ship at large fractions of c, and not only could you transfer people and supplies (and even fuel?) back and forth between ship and Earth *while in transit,* but because the moving wormhole is tied to the reference frame of the ship, it will 'arrive' in the ship's shortened time-dilated time (which could be just a few years), and not the longer, near-lightspeed time (which could be a few thousand years)...
That's *effectively* FTL, without a ship traveling *actually* FTL...and you've still got that wormhole leading back home with you, at your destination.
Great presentation as usual. Thanks for great experience.
Awesome video!
Like you I was disappointed when I found that it is unlikely that warp drive and other forms of FTL are unlikely.
I think the lighthuggers from Revelation Space are arguably one of the best depictions of ultra relativistic travel in fiction.
Anti-matter rockets seem like a logical candidate for ultra relativistic travel.
Maybe the first stellar pioneers will get to other systems using antimatter and built stelasers and laser highways for larger ships to follow.
doesn't matter. travel time won't be an issue after aging is cured and humanity will crawlonize the galaxy
😂
@@RandomGuy-lu1enthat’s still an issue, and even if we can fix a lot of issues we will not be immortal.
@UpperDarbyDetailing technically I don't think we can know immortality is impossible or even that 50,000 years old is impossible--which is functionally immortal. With enough technology complementing the body, I don't see why it can't be
Eventually , after several millennia on the ship, all the people would go insane and kill each other.
Wait isn't this video supposed to come out in 24th november?😅
I have questions about this 🤨
@paparoo9924 what is that question?🤔
Only from your frame of reference
Time is relative
The fuck
The Future of Medical Technology? pls
High speed with close encounter to any pieces of material that gets in the way of your spaceship possesses real problems for your spaceship. Would definitely require a forcefield to provide protection for spaceships to travel at high speeds through the universe.
🎶 Now the speed of C is a wall they say, when you're pushing the speed of light.
And it cuts you off from your yesterdays, pushing the speed of light.
But you know someday you're gonna win that race and run back the years to your starting place, and you’ll stay awhile, before you're back in space, pushing the speed of light! 🎶
Yup. A sophont has to be leaving some stuff to travel that way.
Always happy to listen to Mr Isaac Arthur talk about our possible future
Now the big ships fly to a hundred suns
By pushing the speed of light
And they want good men for the deep space runs
Pushing the speed of light
And the pay is good, and you're young and strong
And you tell yourself that it won't be long
So you sign on board, hear the drive's deep song
Pushing the speed of light
Pushing the speed of light
And you've left behind you the world of men
With no way in space to go home again
When you're pushing the speed of light
Pushing the speed of light
Now it's two months out and it's two months back
When you're pushing the speed of light
Twenty years on your homeworld's track
Pushing the speed of light
And your friends are gone and your lovers too
And there's damn-all left that you can do
And you try to lie, but you know it's true
Pushing the speed of light
Pushing the speed of light
So you sign back on for another run
Of pushing the speed of light
And you swear to God that your pushing's done
Pushing the speed of light
But that one run turns into four or five
And your heart beats time to the humming drive
And there's nothing left keeps you alive
But pushing the speed of light
Pushing the speed of light
Now you've spread your seed with the star drive's flame
By pushing the speed of light
Left sons behind you to carry your name
Pushing the speed of light
And you watch them age, and you watch them die
As you race the light-wind across the sky
And the gods are silent when you ask them, Why?
Pushing the speed of light
Pushing the speed of light
Now, the speed of c is a wall, they say
When you're pushing the speed of light
That cuts you off from yesterday
Pushing the speed of light
But you know someday you're gonna win that race
And fly back the years to your starting space
And you'll stay awhile 'fore you're back in space
Pushing the speed of light
Pushing the speed of light
And you've left behind you the world of men
With no way in Hell to go home again
When you're pushing the speed of light
Pushing the speed of light
Lyrics by Julia Ecklar
Posted 16 seconds ago. Oldest comment : 2 weeks ago. dafuq?
Light spped relativistic shenanigans
It's been on nebula for a year?
What can I say... crazy things happen to time when you get close to the speed of light 😂
Some comments don't age well 🤷♂️
@@yourbuddyunityou made my day
This is going to be one of those ‘Isaac Bite’ episodes I wish we talked more of.
Honestly, I can settle on 99.99%+ of Light Speed so long as Isaac episodes can be pinged to my subscription box at 100% the speed of light 😌
would the time dilation make the new episodes arrive faster then you can watch them?
I thought travelling near light speed IS effectively impossible...viscosity increases with kinetic energy and I have no idea what happens to electron shells in say...gold...where the electrons are "moving" 60% of lightspeed and you try to exceed that.
Nothing special. Relative to you the electrons are still moving at 60% of light speed. Relative to outside observers the electrons are moving at close to light speed. But also, the electrons do have angular momentum, but the solutions are mostly stationary. Is a mostly stationary wave of probability really moving something physical? I don't think the effect would be that notable. The main point of relativity is that nothing viewed under any observer can move faster than light.
Let's make a thought experiment: For the OMG particle, moving at hyper-relativistic speeds, the entire planet was moving at hyper-relativistic speeds towards it. The gold or heavier elements were perfectly fine.
@@vidal9747 yeah...except it's the OMG "particle" not the OMG atom. I can't link to the study itself but, ua-cam.com/video/VKmUNli0Kwg/v-deo.htmlsi=gC4hUC195BqMhp2Y
Excellent vid.
It's like watching an engineering documentary about savage hulks ("galaxy's edge")
It's impossible up until we figure it out. One day kids will be taking field trips to Alpha Centauri in the morning and will be back on time for dinner. #Warp 9
In another universe. Not in this one sadly
Sorry bud, not everything you can imagine is actually possible.
There have to be constraints for us to exist.
Last time i was this early, it was before i left.
16:16 The problem is that gravity is weird. I don't think we have the whole picture yet. Also, the universe don't have to curve to human sensibilities. But, it is still weird negative mass doesn't seems to exist. I also feel the same about magnetic monopoles. But, I do hope we understand it better.
Another great episode. Episodes that are easy to absorb and engaging throughout, are always bangers!
*Higgs Bubble:* One extreme long shot I hold out hope for in the very distant future is a Higgs bubble. If the Higgs does what they think and we can somehow figure out a way to create a Higgs bubble that negates mass from anything within it, and that doesn't destroy matter within the bubble, then we should be able to achieve light speed with next to no energy expenditure beyond the energy cost of maintaining the bubble.
*Blackhole Drive:* If we could create and collapse a black hole at will, then we could do that just in front of a ship for a fraction of a second but long enough for there to be a gravitational pull forward on the ship. If we were able to do it in rapid succession, we should be able to achieve close to light speed with the only fuel being what's required to operate the blackhole equipment. In order to slow down the strobing blackhole would be generated behind the ship. This would also resolve the problem of forward shielding except for the slowing down phase. when the hole is behind the ship's direction of travel.
There was a bussard ramjet episode last month? I feel like I missed woodstock, man.
ua-cam.com/video/MCMiguu_WQI/v-deo.html&pp=ygUUYnVzc2FyZCByYW1qZXQgaXNhYWM%3D
How great, I love the physics tweaking episodes!
I loved the concept from heroic age anime, Of the star way. A column of space that links 2 stars together through gravitational pull on each other. Where time inside of that point speeds up rapidly compared to the outside universe allowing you to travel without breaking the laws of physics at what would appear to be insane speeds allowing you to traverse the Distance between those 2 starsAt near light speed but appear to be going several times the speed of light speed to the outside universe.
When going super fast can you use a plasma window as a lid to a bathtub to slow and catch space dust at relativitic speed?
Timestamps (Powered by Merlin AI)
00:05 - Traveling near light speed is extraordinarily challenging and currently unachievable.
02:45 - Ultra-relativistic speeds enable significant kinetic energy and time dilation effects.
05:31 - Rocket equation limits speed; alternatives exist for faster spaceships.
08:11 - Exploring efficient propulsion for ultra-relativistic space travel.
10:43 - Antimatter enables advanced propulsion techniques for fast interstellar travel.
13:15 - Exploring advanced propulsion methods for rapid interstellar travel.
15:49 - Exploring advanced propulsion methods for ultra-relativistic spaceships.
18:20 - Ultra-relativistic speeds face significant challenges from particle collisions.
20:46 - Exploring the future of space habitats and agricultural orbital farms.
I will just goe with the idea that we simply have not found a way to get universal speeding ticket for going faster than lightspeed
@7:05 Suggestion for the graphic: Should have been red, maybe... crimson? _Ganymede and Titan, yes sir I've been around..._
Man even the end credits are getting better on this channel I love it.
Some fun thoughts here; We might accomplish luminal space travel via a machine resembling the "mass relays" of Mass Effect or the "heighliners" of the new Villeneuve variety. The ship would be "collapsed" into a single "superparticle" containing all of the information of the ship's state, plus a programmed trajectory and a decay factor. The particle would travel at light speed until the decay causes it to expand into the original ship. This way the ship could be aimed at it's destination with a decay timed to cause it to emerge at the desired location. It would seem like instantaneous teleportation for the ship and it's crew.
With this kind of system, we could easily get around the Solar System, and possibly even launch from the surface of planets, especially airless ones. It would be feasible to send probes, and even manned vehicles to nearby star systems, within reason considering that the time delay would still quickly become cumbersome. No worse than radio communication, but tough to run a company or government across that distance. Robotic mining machines probably wouldn't care, and could just start sending useful material back home straight into a safe parking orbit. Say, I wonder if ancient aliens built our astroid belt that way? ;)
Given the crushing effects of wormholes and the necessity for exotic matter to build them, it doesn't seem like we could ever just fly through a naked wormhole Stargate-style. But, we might still achieve SUPERluminal space travel by combining wormholes with luminal travel and passing through as "superparticles". However, there are concerns that there could be a kind of "conservation of time" effect that prevents wormhole travel from being faster than light, or if it IS faster than light, one finds themselves trapped in a different era of time from the one they originated in such as depicted in the science of Orion's Arm wiki.
Under 10 second crew
Few ever mention the problem of hitting something, even something extremely small, while travelling at tremendous speed in not-really-empty space.
A random thought pops into my head; if light experiences no time, then how is is that it can be generated, and then be absorbed? It hadn't always existed, it no longer exists, but it did exist for a time. But no time for itself? Is there a clue as to what time is therin?
But doesn't mass increase also apply to reaction mass? When you accelerate protons to near light speed in your mass driver you can put a lot more push into them than their rest mass.
Have you read that paper reconciling tachyons with relativity by doing something with the math of the ground states and showing it doesn’t have to have negative energy?
Are you trying to be vague on purpose? At least give a title and a DOI would be even better. There are thousands of papers every year.
@ this one was promoted a lot though. I don’t know the exact title, but it’s the first thing that comes up if you search tachyons reconciled with relativity. Not the actual paper just articles on it. I never read the actual paper. I’m no physicist so I couldn’t adequately evaluate the math if I wanted to anyways.
I just read an interesting article about relativistic effects on the viscosity of fluids. That might have real implications for animals or humans or anything alive really
What about using the captured energy from a solar powered laser to generate antimatter fuel onboard? If E=mc^2, then it should work in reverse if you cram enough energy into a single point, right? Thus, if you can re-fuel your ship mid trip with generated antimatter and ram-scooped hydrogen at the front of the ship, wouldn't it be possible to use this fuel to accelerate the ship once it's out of range of the lasers?
there was a physicist named robert enzmann who proposed a ship called the echolance, which uses nuclear reactors to power a particle accelerator for propulsion. the speed of the ship is over 90% light speed.
17:41 Talk about a flex when you can reference a (as of this writing) 7 year-old-episode that was so well done it still works just fine as a primer on using lasers to push light sails around the galaxy. Back in the mid 90s, I played with this concept in an online email team called the Lunar Institute of Technology (LIT) and I called it the Trade Winds concept. I doubt I'm the first to think of it since Robert L. Forward did so much foundational work (his out-of-print Starflight Handbook is still inspirational). Anyway, what brought me to this episode is I'm trying to come up with a LitRPG-type sci-fi story because I'm constitutionally incapable of using fantasy tech in my science fiction stories. At that, I still want the tale to break as few rules as possible. Thanks as always Isaac for what you do!
15:03 that's how UAP moves.
3:14 pi minutes in and Arthur turns into an extremely negative German! What a time to be alive!
Amusingly its the only other language I ever had any even taxicab-level skills speaking.
@isaacarthurSFIA OMG I've gotten a reply from the man himself! Swoon! You sir have not only made my day, you have made my hole weak! I've been a follower and subscriber from the very beginning and just hope you know how much joy, optimism, education and light you bring to the lives of millions around the globe. You are a fine role model, a scholar and a gentleman and I appreciate your work enormously. Thanks, Mr Arthur, you *rock*! Love from London, England, to you and yours.
FF x
PS yes, I really did mean to write 'hole weak' rather than 'whole week' - your other female fans will understand what I mean (and don't forget to kegal, sisters!)
17:15 space trains seem pretty cool in my opinion...
Would it be possible to concentrate enough light ahead of the ship with the right shape so that it both pulls the ship forwards with it's gravity, and lenses the light towards the back for additional trust; and with the additional benefit of vaporizing a lot of the dust that might be on the way? I mean not a full kugelblitz, but something that needs a constant inflow of light to be sustained and won't risk growing independently.
What do you mean going faster than lightspeed is impossibe? Just go up to lightspeed and push the throttles forward a bit more.
"That's when muh 4barrel kicks in and I open th' dumps"
you say "if you can send information you can just send a ship instead"
but would you as a passenger want to be sent as information
would this not result in the teleportation conundrum, of anihilating the original and a clone being made at the destination and then wondering if your still you at the destination
I'm not sure I'm quite so into Inertial Dampeners, since my mass would also change into Kinetic Energy which is heat; and I'm kinda sensitive to the amount of heat energy I am.
an idea for an episode: what if we develop a tech so efficient, we can generate "usable" electricity just from the light that hits us from the stars that are lots of light years far away from us. think a super efficient solar pannel but that can get some 1000W/h per 10m² from the light emited by all the stars far away in the space that bounces on it.
Great stuff as usual.
I appreciate that :)
Kinetic energy being the reason that some particles, which would normally decay by the time it took them to cross the diameter of an atomic nucleus, can reach detectors a meter away from the collision that created them... blew my mind. But then how do they actually know the half-life of those transient particles? Doesn't a detector kinda interrupt the decay process? Did someone a long time ago do an experiment with varying detector distances or is it just inferred based on theory?
Anyway. Cool explanation. Long-time fan of the channel!
A "matter beam" is what I will forever call a squirt gun.
So if anything could go faster than 189,000 miles a second then light would also be able to travel faster than that?
Light would always be the limit?
What happens when we turn on the headlights while going the speed of light? One argument is that from the drivers seat, the photons from the headlights go the speed of light realize to the vehicle. All those nerds not in the car say the light never came on.
An Orion class vessel at .01 c and effective hibernation techniques will put Alpha Centauri within reach.
This is the first ever I get how relativistic speed works with time. Thanks man 😊😊
You are very welcome, and I'm very glad to hear that
Comments questioning the timing of comments are apt
21:00 Silent Running?
Now there's a weird movie from the past :) I can never decide if its very good with some plot and production flaws or a glorious trainwreck :)
This reminds me of Tau Zero
This experiment make another universe
The other limiting factor not touched in this video is acceleration.
How many Gs can a human tollerate for waht amount of time? Or put otherwise: assuming humans can live well in an 1.5G environemnt: how log would it take to accelerate a ship to 10%/90% lightspeed at an acceleration of 1.5Gs? If I'm not mistaken we're talking weaks or month already, if not more...
The strange thing is that, for the passengers. The closer you get to C the shorter the felt time is. So if you can accelerate to a very high fraction of C it would be a very short trip.
🎵 Shadows in the stars 🎶
🎶 We will not return 🎵
🎵 Humanity won't save us 🎶
🎶 At the speed of light 🎵
🎵 Shadows in the stars 🎶
🎶 We will not return 🎵
🎵 Humanity won't save us 🎶
🎶 We slip into the night 🎵
Something I considered about Hawkin radiation I never hear discussed it shouldn't we be able to have one "larger" and one small blackhole orbit each other so that time is slowed for the orbiting one giving us a means of controlling the radiation but controlling the distance of our drive Blackhole from the central blackhole it orbits. Does Hawkin radiation speed not apply to relativity or something? I would find that odd. This means if we have a tiny blackhole that should evaporate in seconds we should be able to slow that down by placing it near a second blackhole and best part is we can avoid the explosion at the end by feeding it into the main blackhole at last minute. I picture a Kepler rosette of tiny, short lived blackholes having their energy and lifespan controlled by a central longer lived and larger blackhole.
I love how we think we're going to do all this incredible stuff sometime in the near future, like a colony on Mars built by Elon Musk lol, while 2 astronauts that were supposed to be on the ISS for a few days have been stuck up there for EIGHT MONTHS!
We can't even get people back from near Earth orbit, we haven't returned to the moon one time since I was a kid, and are on the verge of a disaster with satellite debris creating a chain reaction and destroying all of our current space technology.
IF we ever make it off Earth it will be after we have learned to live sustainably here and solve our energy problems.
It won't be in the lifetime of anyone alive today or even our grandchildren. I think it would be more like 500 to a thousand years from now if it happens at all.
The problem was growing up!!!
Growing up show me that the is no princess, the dragon is inside of you.....
Thx and keep make us living the dream
I’ll give you credit for narrating your own content, which you do a great job at, rather than cop out to some cheesy phony AI bot voice. Keep up the good work.
We need a serious breakdown of slowing down in a new solar system (after solar-sailing to relativistic speed).
I imagine that the advantage of ad free subscription is that you have to keep the subscribers happy instead of every sponsor who can be pushed into taking away their sponsorship of you by a powerful opponent of you or what you said.
it is apparent to me that there is a simple solution. Selective mass subtraction. reducing or completely canceling out mass would kill the tyranny of the rocket.
That's essentially mass effect technology. Unfortunately, we don't have eezo.
Sounds like it would be worth to rush your smaller building robots, not your colony ship, you have no reason to show up until some of that Dyson swarm is built.
Realize that we move through space/time like a trout in the stream. Like the fish, we move through without 'seeing' it. The difference is, we are more aware of it. The level of influence is similar (CURSE YOU THURSDAYS!)
This vid is hype listening at work. Also trying to be the first solo civilian engineer to make functional power armor anybody trying to tap in on the cost?
Great video! Curious if there are enough new discoveries to re-visit the interstellar highway? Ever since I saw the original I've only found the highway concept in "Pushing Ice". Once the routes to the nearest multi-dozen stars you could have entire book series in that setting.
There is an engine, forgot the name of the guy who came up with the idea, that uses particle accelerators to get up to speed.
Define 'particle.' That could possibly mean *any* rocket engine, or somewhat more specifically an ion engine...
Research particle accelerators would have an utterly lousy thrust-to-weight ratio. Insanely high exhaust velocity, but insanely high mass to get infinitesimal thrust.
@stardolphin2 Interstellar mass, once it gets up to speed, with is 5% the speed of light. Max speed is 99.6%
3:06 Isaac Arthur partice his rusty German😅
Nein! Nein! Nein! Nein! Nein!
You mean like the Hypersonic Missiles ?
Light speed snacks would be fire
What about a series of mass drivers within the solar system with a ring mass driver the circumference of the entire solar system? What would be the max speed of such systems?
For ultra-relativsitc speed I think you want to avoid anything potnetially near the ship, hence beaming energy as opposed to a rail of some sort, but that's jsut my opinion.
@@isaacarthurSFIA
I agree. I realize the video was purely about ultra-relativistic speed. I was thinking of a hybrid system, if it at all made since. I just did not communicate that I don't see mass drivers as a viable stand-alone ultra-relativistic speed method, just a kickstarter.
Yea ,,when I had more mass as a kid,, I experienced time differently than when I got skinny as an adult 😊😂❤
How come this one didn't get uploaded to nebula?
It did, just a different cover and no subtitle nebula.tv/videos/isaacarthur-ultrarelativistic-spaceships
Light speed is a kind of suspended animation
Listening to this right on bedtime. Fingers crossed I don't fall asleep at ultrelativistic speed 😂
Isaac: “FTL is impossible”
Me: “It is with that attitude”
Maybe future humans will come up with Slipspace drives powered Zero-point or Vacuum energy?