5 Advanced Space Drives (That May Or May Not Work) | Answers With Joe
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- Опубліковано 1 тра 2024
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I recently talked about some of the most habitable exoplanets which unfortunately we'll never be able to reach because our technology can't do it. But there are some very interesting concepts being developed that could change all that - if they work.
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LINKS LINKS LINKS:
Scott Manley's video on Xenon:
• Why Do Ion Thrusters U...
www.space.com/38720-nasa-satu...
/ can-spacexs-starship-r...
courses.lumenlearning.com/ast...
en.wikipedia.org/wiki/Dean_drive
www.centauri-dreams.org/2019/...
www.nextbigfuture.com/tag/mac...
My previous video on EmDrive:
• NASA Proves Emdrive Wo...
www.nextbigfuture.com/2019/10...
www.universetoday.com/143741/...
My previous video on Alcubierre Drive:
• NASA's Eagleworks Lab:...
gizmodo.com/the-scientists-wh...
www.newscientist.com/article/... - Наука та технологія
Arthur C Clarke has one of my favorite quotes ever. “Either we are alone in the universe, or we aren’t. Both are equally terrifying.”
I love the quote but personally, "amazing" seems a better fit than "terrifying".
"It's always aliens, until it's not." --Arthur C Clarke. We've landed a big one, boys!
@@marsbase3729 The problem with aliens existing is any species that is long lived enough would destroy us. In contrast, if we were the only life forms we would be walking through the void with no one to talk to.
@@KRYMauL I disagree. The fact that a species is long lived doesn't mean it would destroy us. In fact, the longer lived the species is, the more likely they are to have violent tendencies that would lead to their own destruction. Maybe if you said "could" instead of "would".
@@marsbase3729 The idea was that an advanced alien species would likely not register us and just plow though Earth to build a space highway or something see Hitchhikers Guide to the Galaxy
"Or maybe pursuing this is all just a waste of time" -- No. Not a waste of time.
A caveman decided to sharpen a stick once and that, through a chain of extremely unlikely and fortunate (or unfortunate) events, we got to discussing making warp drives in the first place. A caveman is already convinced we possess magic. And space travel, and the pursuit of it, has lead to so many innovations in just one human lifetime that our own parents have trouble keeping up. The future is built on the backs of all of these, often stupid, often fruitless pursuits. Be it an idiotic dean drive, or the first five hundred things a caveman sharpened before realizing he could stab things with it. We're getting there. Give us time.
Well said. People tend to ridicule failures, but failures guide us in the direction of success.
What an awesome comment! Thanks for sharing your view like that!
well said
Indeed. Learning, any learning, is worthwhile. Some may not pan out, sure, but how many medicines and technologies do we have because some person decided an obscure Amazon frog was of interest, or radioactive isotopes, or a myriad of other things.
@@morosis82 Or the discovery of antibiotics because someone left out a sandwich and thought to take a closer look.
1 Newton = force exerted against your hand by an apple.
Well played, Joe.
I went to a farmers market that had 33 varieties of apples. I was visiting family in the Boston area. It's quite possible the market was in Newton.
Coincidence?
/Well yeah, but still.
My first thought, before even looking at the replies. :p
I just got that joke
I don't get it.
@@naungyoe3215 the story is Newton thought about gravity when an apple fell on his head. Its a popular story but its not really proven to have happened.
"The Earth is a jealous mistress. One who does not give up easily its children."
Space 1999,,, ultima thuley
Space is a jealous king who does not readily permit intruders to his realm.
@@darrinwebber4077 Technically you are in space rn...just in a protective globe that keeps you alive
Yeah I watched the video...
Mistress. Children. Does not compute.
Hi Joe, Could you make a video on deep sleep, cryo sleep etc.
Search joe scott cyronics
Yeah he already did homie!
Came here to say what 2 people already did
The Pentagon is now officially investigating UFOs - that means ET is now coming here
He did one on cryo sleep
The XLS drive is my favourite.
If you've ever been scrolling down an Excel spreadsheet and scrolled down too much you've no doubt seen extreme relativistic acceleration of the cursor. It goes fro Row 50 to like 5 million in a hundredth of a second!
Harness that and we'll be on Risa in no time!
If I remember correctly, holding down the Control key + the Down Arrow will send the cursor to either the next cell with something in it or the bottom. Back in the '90s, a small computer integration company I worked for had me use Excel to write a program for their employees to use. They didn't believe me when I said that Excel was the wrong tool for the job, that what I should have been using was a relational database. But, of course, they didn't listen. I managed to do it but it took FAR too long because I had to write custom macros which were quite involved. Ah... but another story for another day.
Hahahah, true!!
Lmfao right
The electron drive: tests have been positive!
* crickets *
i on ja mon
i on ja mon
"Exotic Matter" can be found in "Unobtainium"
Dude that is a high temperature superconductor.
But you can smelt vibranium to get unobtanium, you half way there!
@@RRSmurf The best source is Vibratium ore from the Island of Lesbos.
we call it Element Zero, or eezo, in 2149
Thats funny
Hi Joe, could you do a video on the possibility of life on Venus based on the presence of Phosphine?
Scott Manley just made one
ua-cam.com/video/GWj85r02Oiw/v-deo.html
I think this is a great idea
Fantastic idea! +1
Second that!
Please Joe! 🙏
maybe we'll find a Stargate buried and skip the spacecraft.
+1 for the reference.
Or MAYBE we will find a Mass Effect Relay somewhere out in space. 😁
I mean, there's always the off chance we'll discover the blueprints to a faster than light engine encoded into the microwave background radiation. Species from the last iteration of the universe had a lot of time to work on this stuff.
@@YourIdeologyIsDelusional That would easily be the most amazing and most terrifying discovery of all time because it would simultaneously confirm that the universe is cyclical, and that we will know that we will see our own demise.
@@KRYMauL
Maybe not. Depends on the cyclical model. Just because something from the last cycle left a message doesn't mean they're gone. Could have been a contingency plan, or something done just because it could be done.
A species possessing technology that can manipulate the fabric of space may very well be able to survive the death and rebirth of the universe. Temporal stasis, pocket universes, possibly even manipulation of the vacuum itself.
Clark had a fourth law, "For every expert there is an equal and opposite expert"
Michael Spence I love it!
In some cases, it’s the same expert.
"For every 1000 experts, there is at least 1 person who is both willing to call themselves an expert and willing to oppose those experts."
Ya know this is so true in everyday life
This is a bit off topic, and I don't remember where I heard it but it makes me giggle from time to time:
"For every male action there's an equal and opposite female overreaction"
"maybe a starship can drop it out on the way to the moon" best line I've heard in a long time
My main complaint about Nebula is that there are no comments. Sometimes there are very interesting stories or discussions in the comments on UA-cam.
"Wouldn't that be a small Hadron Collider"
I'm pretty sure if you combine a "Small" and a "Large" you would get a Medium
Bro it would become a family sized
Wait, wouldn't that be a standard Haddon Collider?
@@The_Viscount Ooh, if we keep this up we'll end up with a regular hardon collider
Luke Slywalker a regular hardon collider is a gay man who frequently has sword fights
So a Small Hadron Collider would be tiny Large Hadron Collider
"Maybe a different species..."
16:46
Neil Breen
lol
Thank you, I was wondering about that.
Uh oh. You're gonna be one of the 300M he wipes out when he returns from the future.
#EyesOnBreen
15:00 How many technologies that we use every day would have looked like a waste of time before some revolutionary discovery was made?
Precisely!
Agreed, If we look at the advancements made in just the last 50-100yrs...just imagine the next.
We might be on the brink to a breakthrough discovery that could be a TOTAL game changer.
Man, Alcubierre’s Warp drive might one day just be an upgrade option for our ‘personal pleasure crafts’, right?!
Exoplanet paradises await!
@@Val_Halla777 I'd posit that uploading ourselves onto a computer is more likely.
Exactly. Thank goodness for us some of our greatest thinkers and innovators didn't share his bleak outlook of its JUST TOO HARD so why bother.
It took a few tries, but I managed to hit the one-frame image at 16:46:
\/ SPOILER \/
The legendary maker of insanely terrible movies and unbeaten champion of RLM's Best of the Worst, Neil Breen!
Cliff Smith came here to see if I was going mad
Just use . and , to scroll frame by frame. easy.
@@NuclearTopSpot Thanks!
also try setting speed to 0.25x its way easier to catch frames
breeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeen
Hi Joe, in 20 years of listening to speakers (including myself) justify human piloted space exploration, I have never seen a better, more succinct argument than the one you made in a record 8 seconds. This video was a great snapshot of the field, and also very respectful of both the practitioners and the naysayers. Well done sir! PS Mr. Agnew is going to be thrilled to be featured here if he isn't already aware of the video. :)
As always...great content and the fun, Joe Scott, always makes it great to watch.
So noble of Xenon not to react with stuff.
All you have to do is use helium and magnets and a few drops of vampire blood.
Is this a Nightlord reference?
Heffalump blood will work in a pinch
Instructions unclear: toaster is stuck in vampire
Sir, you just got me hooked on another podcast, thank you very much! It’s really awesome.
Great job for making it so easy to understand the hardest of stuff. I wish more people knows about you 👍🏼👍🏼
The aliens in the movie Independence Day are actually sentient beings that have been on generation ships for hundreds of thousands of years. By the time they arrive anywhere, they are so desperate for supplies, they just take what they need without concern for indigenous life. Essentially, they have evolved into galactic locusts.
I find this theory the most plausible of all first contact scenarios.
Possibly, however the premise of the destruction of life to get resources from a resource poor environment and possibly losing your own lives doesn’t make any sense. They compare man to ants against a advanced civilization like that purposed in Independence Day, however ants can still cause a lot of damage. Again for what? A resource poor plant? Not likely, more likely go after resource rich asteroids, moons, and other astronomical bodies that won’t have indigenous life to put up any kind of resistance.
@@randenrichards5461 It takes so long to get to a destination that you have to acquire the necessary resources when you arrive regardless of the cost, or die. It makes perfect sense.
@@Lord.Kiltridge An advanced species should be able to invent recycling. That's not 100% efficient so they will need resupply. However, are there any elements on Earth not found in asteroids?
.
Surely they would have plenty of energy to make things from basic elements. However, they might be really really bored... when they get to earth they'd hit the casinos and beaches hard.
You mean district 9?
They're basically odd-looking humans, and we're the aborigines.
Hey joe, love your show! Special request: would you do an update on the flint water crisis? What efforts, if any, are being made.
Love the channel, good stuff presented in a fun way. Keep up the good work.
"We brake for no one "
Space Ball One Its gone to plaid!
Aye, we just need some dilithium crystals and we're all good to go!
Now a days we use mushrooms because the whole universe is connected; because to sufficiently unsophisticated writers, all technology looks like magic anyway.
Zoom zoom!
Shroom shroom!
@@carpdog42 Ah yes, the mushroom drive: For when you need to prove to an entire fanbase that, yes, even after all the ways that their favorite franchise has been abused already, it really can get worse somehow.
@@delphicdescant Well said...a bummer to see an amazing franchise dying
One of my favorite ways to power ion drives in Kerbal Space Program was using a couple of radio-thermal generators to charge batteries, and doing a "short" burst using the ion thrusters when the batteries were charged. Recently, I was wondering about using Super Capacitors instead of batteries (for the high cycle count and low weight) ... and the concept of Diamond Batteries takes the power source to a whole new level.
You're closing in on 1M subscribers! That's awesome! I started subscribing at around the 50K point, it has been awesome seeing this channel grow. Keep being you! It's what the people want!
Hi Joe, really enjoy your channel.. Keep them coming and keep smiling ☺
I traveled almost 21 minutes into the future while I watched this.
Steven Moore if he watched it again he’ll have traveled back in time
Advance propulsion of the day... Crawling out of bed for work lol
Really good video Joe.
I read somewhere (I lost the source) that the EM drive was magnetically interacting with the test rig. When it was moved away the lift effect stopped.
Almost died from the “small hadron collider” 🤣
"The Earth is a jealous mistress: one who does not easily give up her children."
Teehee, humans are smol.
yesh but we are powderful
@@nmarbletoe8210 , we're cats, basically.
It would be even worse if we lived on a bigger planet.
... but better if we lived on a bigger spin-grav station, use the force in our favor.
yeah, only truly ungrateful people said that, they don't deserve 24/7 free oxygen
Meh, the Asgardians are gonna give us hyperspace engines any day now.
Any day.
Who r asgardians sir??
Yep Jack and the team will sort it
@@aimgoal2453 Now I feel old...
Actually the Asgardians didn't give us hyperspace engines. We duplicated Goa'uld technology ourselves and use naquadria to power it. They did give us intergalactic hyperdrive engines so we could go to Atlantis through.
@@DavidKnowles0 Ah, a fellow intellectual. How nice to meet you.
You are, of course, right. I was being facetious. :D
How about a sequel: Drives that should fly in the next decade.
Hey Joe I love your awesome videos please don't stop making them. And your comment saying that maybe it's a waste of time and energy to keep looking at some of the seeming really crazy ideas about space travel but maybe not.
Hey(Brazil here), i love when you do space related subjects, always catch my attention, love your channel by the way
Oh wow the entire country of Brazil!
"Things are only impossible until they are not."
The Neil Breen moment is priceless! Good Work!
Almost 1 mil congrats man
Something fun there was a concept I thought of similar to a Dean drive for a drone. It would be covered in string of a certain length then an internal mechanism would go and the thing would juat float off of its vibration in the atmosphere. Sort of using it as the ground through the strings.
if you can make a mechanical system efficient enough you could make a bayblade kite drone if thats what you are trying to conceptualize... fun... but idk if its worth your time lol.
@@velnz5475 it was more of a situation of vibration similar to when you set a cotton ball on a instrument and hit the right cord and it floats, but instead of it being resonance just outward vibration in a structured way. The idea was for a dusting bot for my house. I ran into limitations though with technology. I couldn't find the right parts to make it smaller than a beach ball. Plus at the time I couldn't find strings that were of a sufficient quality to where I could use specific wave forms to give direction. It seemed silly to make it after that but I did make sure the concept alone would work. Just a matter of refinement of materials. Nothing ground breaking but still that wasn't the point.
Love Wayne's World and Monty Python being thrown in during the science. 😁 I chuckled and learned
This is a truly amazing vid! Finally a normal guy talking about stuff that would typically fly over people's head at the speed of light. Here I am actually enjoying the science and the sad idea that we may actually be stuck in this solar system forever. Or at least until the Sun swallows everything....
I gave in and got the subscription to Curiosity Stream and Nebula (I don't normally use streaming services) and I'm really digging both! I was running out of documentaries on YT and like seeing creators do their thing.
If my Battletech lore taught me anything, the Kearny-Fuchida Drive (K-F Drive for short) is being theorized right around now :)
A bit surprised you didn't mention the horizon drive, as predicted by the quantised inertia theory (as you previously had an episode about that). They are doing experiments with that, and apparently the early results seems at least promising.
Awesome content like always
Thanks Joe, you make mornings more tolerable!
I made a reactionless drive in my garage. Here it is, next to my perpetual motion machine. Science rules!
8:01. Should have added the reference to Sega’s “Megadrive” aka “Genesis”. ☺️
your channel is great dude
I watch all your videos, not cause I care about space much but I just love listening to you explain things lol
Great video Joe, but I'm surprised you didn't discuss the Infinite Improbability Drive... :-)
Or the trusty Flux Capacitor.
What about the bistromath!?!
I'm pretty sure "they" "officially" debunked the EM Drive at some point last year. It turned out that the "force" at work was the super weak electromagnetic interaction between the Earth's magnetic field and the electronics onboard the EM Drive. I would usually dig deep to link to the study which debunked it... but that's a lot of work for something that... doesn't. =)
As for the Helical Drive, and the Alcubierre Drive, they may have more basis in reality. Obviously, the "oscillation" part of the Helical Drive is a bit silly, as is the requirement for "exotic matter" part of the Alcubierre Drive.
However, particle accelerators don't NEED to be the size of the LHC; in fact, the Ion Drive is a type of particle accelerator. Also, we CAN "warp" spacetime with powerful laser light (although, something along those lines may be what is meant by the "exotic electromagnetic field generators," since light is just a wave in the electromagnetic spectrum.) We might also be able to "warp" spacetime with the mass "acquired" by particles accelerated to near light speed using a particle accelerator. I don't pretend to know the practical requirements of either form of "warping" spacetime in either of those cases, and it may well be that both are impractical at best, but it does seem to me that we have both observed the warping of spacetime with the gravitational wave observations which have been made, we have gotten pretty good at accelerating particles, and we might possibly be able to warp spacetime with electromagnetism in a way that becomes "practical" for "transportation."
All that being said, 2020 has been a rough year, and I'd settle for anything that would "slow things down" so that "We" as a species could maybe recover our balance a bit and hopefully start making some forward momentum again. That too, seems pretty "far fetched." =/
Sadly, the Alcubierre drive requires two different kinds of warping of spacetime. In front of the vessel, you need the normal kind of warping that "compresses" spacetime in front of it, just like gravity does. This we can do. Don't get me wrong, it's enormously non-trivial at those scales, but it is essentially an engineering problem, not a science problem.
But at the _back_ of the spacecraft you need _negative_ warping of spacetime that _stretches_ it. This would require exotic energy or exotic matter with negative mass... and it would require a _lot_ of it.
Putting aside that we have zero evidence that such exotic material exists (Dark Energy is subtly different and not useful for this purpose as far as we know), last I heard, with improved calculations and layout of the warp fields, we've got it down to the point where we "only" need approximately one Jupiter-mass of exotic matter to create the equivalent of Zephram Cochrane's prototype warp drive. There's also the small problem of the prediction that as one travels at supra-light speeds using the Alcubierre drive, one would accumulate insanely high-energy particles in the field that, upon deceleration to sub-light speeds, could potentially release enough energy to disrupt a planet. _Probably_ not a star, but still...
So yeah... even if it ends up not violating the laws of physics (which it probably does), it requires obscene amounts of exotic energy/matter and may or may not completely obliterate your destination upon arrival. Fun! Or... something-something-handwave-primary-warp-coils-antimatter-reactor-warp-plasma-subspace-manifold-hrrmmrphrhm...
@@barefootalien SOOOOOO interesting about the accumulative, destructive energy theory. I think I may have heard of it a little once before, but that truly is a major concern.
As for stretching back spacetime behind a craft using the Alcubierre drive, I'm not sure if you saw the whole video, but Joe mentioned that some people (experts? No idea) believe that spacetime behind the craft would snap back to normal on its own without the need for the drive to use power to reverse the frontal effects... But who knows, it's all theoretical at best at this stage... 🤔
@@Aquascape_Dreaming I did see that after I posted. And that the negative energy needed is down to just a few tons worth!
I question how space is meant to "spring back" asymmetrically though, without the stretching field behind to cause it. I've also never heard a good explanation for what happens orthogonal to the direction of travel... Spacetime is essentially the stiffest "substance" known, which is why gravitational waves are so tiny in spite of the enormous energies they carry. I may very well be going too far with the "fabric" analogy, but... If it has any analog to shear strength at all, I'd think that would directly resist the motion of a "warp bubble". Either that or the field would have to be extremely "wide", enough for that shear strength to dissipate naturally.
@Bret Richter so a space submarine
@Bret Richter Well, that's a common "pop-sci" explanation of aerodynamic lift, and there is _some_ truth to it... But if that was all there was to it, how would an airfoil fly upside down? Or how would a symmetrical airfoil produce any lift at all? How would a paper airplane fly?
Anyway, I'm drifting off subject, heh, just some food for thought for ya. ;) (I can explain if you're interested.)
But with regard to the subject at hand, the trouble is that air has basically zero shear strength. In the dimensions in which we have data on it (compression/tension specifically, as gravitational waves are longitudinal, like sound waves), spacetime is the stiffest thing we know of. I don't recall the exact numbers off the top of my head, but it's something like billions of times as stiff and unyielding as steel or any other material. So it seems likely that it's shear strength would be comparable and I've not seen anyone account for that in a presentation on an Alcubierre drive, that's all.
In order for your air bubble analogy to work, the warp field would need to create a region of some medium _other_ than spacetime. Say... "Subspace" which is exactly how Star Trek gets around it. But the Alcubierre drive, as far as I'm aware, purports to simply create regions of compressed and expanded spacetime for and aft, leaving the interior spacetime unchanged. This, to my understanding, would not be like flying through air or like a bubble ascending in water, but more like trying to drag one region of steel through a steel plate. This is _possible_ of course; it's called stir welding and is used by ULA in their Delta rockets... But it takes orders of magnitude more power than flying through air. I'm just wondering if that is accounted for.
I suppose I could read some of the papers on it...
Idk why exactly, but the line/fact of having only “one atom per cubic meter in space” is both fascinating and terrifying.
Ok, Joe, you finally did it. You convinced me to follow your link and sign up for Curiosity Stream. I hope you are happy now.
You forgot the power requirements for the warp drive, it started out as turning the entire mass of the sun into pure energy, after some work they have that down to the mass of Jupiter.
So there are multiple issues with it
To be fair, Jupiter is a considerably smaller problem. But to an ant, all elephants are equally fucking huge.
Yeah the biggest issue however has to do with causality as the front of the warp bubble where the negative mass energy needs to go is separated from the craft itself by a causal event horizon. This means an external user needs to regularly provide pulses of negative mass energy in order for the warp bubble to actually work meaning a warp drive could only work with a preexisting warp infrastructure. That is the detail that very much limits the amount of applicability even if negative mass energy is real. Good for galactic mass transit not for exploring new places. >_>
Great video and very interesting topic. I hope we achieve interstellar travel this century. I recently wrote a paper proposing a type of interstellar spacecraft called Solar One (0.3c). I believe the more research we do and resources we spend, the sooner we will achieve interstellar travel.
I hope we survive this century
As much as it sounds like cliche at this point, only Elon Musk can help on this. Governments are too busy trying to implant communism in the western world to be worried about space.
@@MR3DDev wtf?
@@MR3DDev "trying to implant communism in the western world" - please describe what specific changes you are referring to?
@@MR3DDev Go communism yaaaaay! No they're not. Your government is trying to install socialism because most of you are unable to take care of yourselves. When it comes to taking care of each other...You won't do it. So what choice does your goverment have?
Hi Joe - Great video as per usual! I just finished HOW TO DIE IN SPACE (Paul Sutter, June, 2020 Pegasus Books). Sutter puts an interesting scientific lens on current popular science. A single example from his book: After 10 yrs into a 40 yr journey to X @ 10% lightspeed, you are still in the Oort Cloud.
I second the notion that you should make a video on the phosphine biomarker discovery, I believe you made a video about venus already, but this could be a really cool idea!
You mentioned the Mega Drive but fogot about the Super Nintendo.
The Mega Drive was great!
Neo Geo pocket
Ah, I was worried that the video wasn't getting to the existential dread part, but it showed up right at the end ;-)
I like how Joe and Tim are now close enough buds they can have fun digs at each other.
I love your content and topics of contents
At 1G constant acceleration we can get anywhere in the universe in 12 years. Because relativity... That's what the traveller's would experience. Tens of thousands of years would pass on Earth... so yeah... There was video showing the math...
Alejandro Tkaczevski damn, I have been using my allotted 1G of acceleration upside down this whole time...
Unfortunately, as far as we currently understand physics, that's impossible for any object with mass. As you approach the speed of light, the amount of energy required to accelerate a mass approaches infinity as an asymptotic limit.
@@cliffsmith23 That's where time dilation comes into play. Because time contracts at high velocities, so does space, which makes the distances and times involved smaller for you, who is travelling at these speeds. While on Earth, the distance for your ship is, let's say, 4LY, and the journey takes maybe 100 years, for your ship, space and time has contracted, flattened in your vector of motion. Which means that for you, the distance was only maybe .01LY and it took only a week or two. Both are correct - you experienced a week, Earth experienced a century. Relativity is whack.
ua-cam.com/video/GgpVe2G9ByE/v-deo.html
Here is the calculator spacetravel.simhub.online/spacetravel.php
Nukes (project Orion) can theoretically achieve couple percent of light speed and get us to nearest stars in a century or so. And that's without any new technologies in terms of propulsion.
Laser propulsion can be faster but we'll need some better reflective materials. But that's easier than reactionless drives.
you would need to get shit tons of nukes in space...and when reducing speed...you would be flying into nuclear explosion.... unless you wanna just do epic drive by into the void
@@teemuleppa3347 you won't fly into an explosion because the bomb is moving at the same speed as you. Think in relative speed :)
And tones of nukes is still better than grams of exotic matter. We know how to make nukes, and we are quite good at it, we don't know if exotic matter can exist at all let alone how to make it.
Btw I know that we won't ride the nuclear blast to new worlds tomorrow. My point is that there are ways to travel to other stars that are MUCH more achievable than "we don't know if physics allows it".
Daniel and Jorge's podcast had a great episode on Alcubierre's drive... definitely worth checking out for a better explanation.
I had two kinds of engine ideas. One was, admittedly, a version of Dead Drive with gyroscopes to "convert" linear force into perpendicular angular force.
The other though uses miniature gravity waves bounced between two plates to form stronger waves. It relies on the idea that gravity waves act like photons in the sense that high frequency waves carry more energy than low frequency waves respectively. With this idea it then depends on matter of various kinds reacting with the waves to create a number of effects... which is where the idea passes WAY into the fictional.
*Artificial gravity (NOT IMITATION GRAVITY, IT'S THE REAL STUFF! I DESPISE THINGS THAT JUST SPIN AROUND AND CLAIM THAT AS ARTIFICIAL GRAVITY!)
*Possibly: artificial anti-gravity
*Possibly: increased gravitational pull (from the matter in question, it weighs more with no additional mass)
*Possibly: inverted waves (remember gravity waves basically go from 0 to infinite, whereas most waves go from -infinite to +infinite, so making inverted waves, - + could be useful)
Really great video. You make my Monday a little bit more tolerable.
The nagging question in my head is "what about brakes?"
No friction in space means that we can't apply the same principles used in terrestrial vehicle design. No air, water, or road friction. If it takes so long for us to gain momentum, it will take us just as long to course correct or slow down which can be dangerous given the spontaneous nature of space. I guess I'm concerned with the reality that one glitch, oversight, or RST (rogue space thingy) can result in catastrophic mission failure.
Any ideas? It seems like whatever we end up doing with gradual acceleration, we'll be handicapped in terms of manueverability. Maybe have backup chemical thrusters? Of course, that adds mass...
If you eliminated inertia you could start and stop instantly, and it would not require much energy to attain high speeds.
Actually warpdrive doesn't have inertia mass, g forces or momentum. When you drop out of warp you stop when you go to warp it is done instantaneously.
@@clementvining2487 Agreed. I left the comment about halfway through the video. I just really hope we find that exotic matter soon.
@@jacobperez7329 The need for exotic matter is an assumption by Alcubierre when he first made the metrics. This is debatable the only thing that is definitely needed is the massless spacetime bipolar geometry distortions. There maybe other ways to get this. And then also it depends on what you consider exotic matter or energy to be.
Youre goung to have only a couple decades to make that course correction.... Yawn
When you did the pause with the "Image not found" thing, my video stopped to buffer. Was hilarious timing.
Step 1 : Develop radical live extension
Step 2 : Build a Dyson swarm
Step 3 : Build a Ship withe a huuuugee solar sail
Step 3 : Use the the sun to prepell you forwarts.
Step 4 : Chill in interstellar space
Step 5 : Shot a lightsail with a laser at the destination Star
Step 6 : Use the lightsail (step 5) to slow other lightsails and your ship
Step 7 : Repeat Step 6 until a sail is stationary
Step 8 : Slow down
Step 9 : Dance on proxima centaury
I havent done the math on this, but the trip itself shouldnt take more than a few hundret years
Stabilized element 115 would help push us along :)
YES!!!
With the major technological advances we've made in my life time alone (30 years) and many of which would have seemed like magic only a few years prior, I honestly can't wait to see all the crazy stuff over the next 30 (hopefully).
AI will be a game changer. It'll leapfrog us decades into the future in only years. Or it'll leapfrog itself and we'll be left behind as it turns the planet, and eventually the universe, into factories to make dildos or something.
And what about 100 years? 500? We can’t begin to imagine what will happen that far into the future, any more than those 500 years ago could imagine today.
"and many of which would have seemed like magic only a few years prior"
Really, which major technological advances?
@@johnbash-on-ger A tiny computer that can be put in your pocket. That's one
@@johnbash-on-ger The internet.
Thank you thank you for connecting me with Curiositystream
@Joe Scott Was wondering the other day, since we know 2 orbiting black holes cause gravitational waves (which expand and contract space time) do you think it could be possible to use multiple pairs of orbiting black holes to cause an interference pattern in the gravitational wave field where the expanding space would be at the rear of a craft and the contracting space at the front? Thus negating the need for some "strange matter"
Where can I get some of this Negative Mass. I really need to lose weight but I ain't gonna Diet.
Travel to another planet with Negative mass, where you can anhialate to begin again!
Some day there will be trillion dollar industry weight loss/health spas on the moon and Mars!! "Lose weight without dieting"! Plus free, all you can eat, Moon Pies and Mars Bars for everyone!!" :D
We just need to wait for the aliens to come to earth to give us the technology we need. In exchange, we can give them cigarettes!!!
Give them cigars... that will kill them even quicker.
And they can have all the French girls they can carry !! 😂
ua-cam.com/video/JZuhvJl_5oc/v-deo.html
How about we avoid halo
@@jasonross9212 Right, "French Girls are Easy" ;D
Got curiositystream at the start of Covid. It seriously is the best, and honestly great for kids too.
18:19 - I have been waiting forever for Joe to mention Tom Scott. I love both of their content for very similar reasons, it's relaxing and informative (among others), and I knew they probably weren't related but I thought it was funny to of my favourite youtubers for information communication had the same last name and style of channel name.
Problem with the math(s) argument at 13:27 is: everything in nature can be described using formulas, but not every result of such a formula corresponds to something physically existing. Especially when values get negative (or even zero) we should be sceptical whether there is a real world representation for this value.
This! SO this! Wish physics people would just realise that math isn't an answer in itself, it's just a tool and needs to be used responsibly.
But isn't that essentially the story of how positrons were discovered?
dived by zero and you produce infinite energy
the issue isnt math, its the models being an approximation of the phenomenon
like singularity being infinite then they found the holographic principle to describe the surface of the blackhole and not worry about the singularity
@@PhilBoswell Yup! But it doesn't always work. to predict physics from math. The fact that it works sometimes is pretty amazing.
My favourite reaction mass free drive is building a massive sun laser and pushing ships around with that :D
Why hasn’t anyone else also stated it.
@@cwdiode4521 Yeah, it's weird. Sure, a stellar laser is a massive engineering challenge, but it's entirely within the realm of known science
SFIA gang represent
Brent Smith Rascally Rabbits!
Can be made now. No breakthrough needed. But not massless. photos do have momentum. not a lot, but some. just no rest mass.
Wow love this guy. Comedic chops and nerdy science.
I know, right?
"reaction less" really has a perpetual motion feel
I think we may be looking at this the wrong way.
It’s like saying: “We can’t travel from the east coast to the west coast because a car won’t hold enough gasoline (or charge)”, and then focusing on building bigger, better engines and fuel supply.
We all immediately recognized why that’s a ridiculous statement. Just stop at a station for a fill up!
When it comes to cosmology, we tend to think in a paradigm of isolation. That is, nothing exists between the boundaries of heavenly bodies, and that outer space is completely vacuum and void. That’s simply not the case.
I hear there’s a lot of hydrogen out there, and I suspect other forms of energy flowing to and fro in a highly interconnected universe. Maybe we should be looking at a way to refine our vessels to capture fuel on the go instead of trying to get there on one tank of fuel.
Maybe one day, we’ll travel the hydrogen highways or shoot from one magnetic field to another generating electricity as we go. Lots of possible interstellar “gas stations” out there if we drive the right vehicle.
If you were near and liked chocolate, I'd give you one of my chocolate chip cookies.
He specifically mentioned a spacecraft that would collect the sparse matter floating around the universe to utilize as fuel, but as the video said, that's only feasible when you're near some sort of cosmic engine like a star, because that only amounts to about 1 atom per cubic meter out in relatively empty interstellar space. There is absolutely not some sort of "highway of hydrogen", as hydrogen that was being spewed out by anything would spread out and disperse as it collided with itself, getting more sparse and thus less useful the further away from the source you got; there would have to be some sort of structure holding this proposed "stream" in place for it to be something of much value, and there's no way for such a structure to be formed far away from any sort of power source such as electromagnetic fields
HeyImAName HeyImALastName
Yes. That’s my understanding. We’re hoping for an engine that requires very little fuel, right? I’m fine with being wrong, however. I’m often wrong. Though I enjoy it, I’ve never learned a thing by being right. To be clear I’m not trying to make absolute statements here. Nor am I trying to build the engine that takes us to the stars. I’ll leave that to someone with a larger brain and a much larger wallet, but I do enjoy the brainstorm.
I’ve been hearing a lot about magnetic fields and how they seem to be just everywhere we look out there. I can’t source it, but I recently watched something about cosmic filaments being formed by some sort of magnetic field interactions and matter moving along those filaments. Probably not the right scale or nearly enough of it, as you point out, but the magnetic fields are really what gets me thinking.
There seem to be magnetic fields nested all the way up. Earth’s field within that of the solar system, within that of the galaxy. All the way up to Laniakea, where we begin to see something familiar in the Shapley Attractor and the Dipole Repeller (That’s gravitational, of course, but since when does gravity repel?). I have to wonder if there is some kind of field reference in the way that voltage has a ground reference. Very intriguing thoughts there, but I’ll let that one lay.
I’ve always seen the fundamental forces as two pairs of opposites; one pair at micro scale and the other, macro. First impression of magnetism is that it is attractive, but is it? Certainly is to iron and such. Gravity certainly is; between bodies of mass. Magnetism seems to deal with bodies of energy. It could be said that magnetism is only repulsive (between magnets), since the field is shaped like a toroid and pushes around to the other pole and continues pushing from the outside to hold two magnets together. Haha. Use a monopole to repel/ launch from one of Jupiter’s poles at incredible speed. Just spitballing; I don’t believe monopoles exist, but maybe we could fake them somehow. It’d probably require a similarly impossible amount of fuel and most likely smear you into the walls of your ship; magnetism being quite a bit more powerful than gravity. There would have to be precise controls over the qualities of a ship’s artificial magnetic field and then reachable, larger fields to “bounce off of”, so to speak. Something like how we use a commutator to induce continuous rotation in a motor rather than the fields simply locking together, pole to pole. (I probably should have just said counter-electromotive force, but where’s the fun in that?)
Still might require more energy than we can deal with and probably over reaching with our tech. These macro scale forces are used to great affect for propulsion here on earth. Nature seems to enjoy dualisms; opposites. Maybe our aspirations to travel on a macro scale require the kind of energy manipulation afforded by looking to the micro scale forces. Fusion drives, right? Could there be other ways to play with the Weak and Strong forces than smashing atoms together or tearing them apart. Who knows? No one will, if no one ask the question, and no one actually considers it once proposed.
Let’s face it. We won’t be getting any vessel into outer space without some hefty fuel, and there’s just not any way to take enough with to do a whole lot out there. Orbiting fuel depots would help, but we still only get one fill-up. So, whatever gets us there will probably have a lot to do with what’s out there already. There’s serious limitations on this kind of travel for sure. With our current understanding, everything seems stacked against us. That doesn’t say impossible to me. That says to me, we don’t understand enough yet.
Dismissing an idea because it‘s been spoken of, or because it doesn’t fit what is thought to be known, won’t promote any understanding whatsoever; certainly not discovery. It only serves to settle a perturbed ego by reassuring its own paradigm, thus guarding against the dreaded possibility that someone might disagree, or say something to cause doubt.
Singularity Squared LLC. Thanks! Chocolate and I have a very strong gravity for one another. 😉
While it is true that there is matter between the stars, it is VERY diffuse so collecting it in any useful amount at any reasonable energy budget is pretty unfeasible. Put another way, if you have the power to make use of the interstellar medium, you might as well just use a photon rocket, which is a real thing but has a maximum (ideal) efficiency of 300MW/N
"and you can't roll down the windows if somebody farts..." I literally almost spat out my soup in laughter LOL
lul lul lul hahah funny
Soup for breakfast?!?!?! I hope you're in the old country!
@@fuknrowdy Nope. Not that old. I'm in Australia and it's midnight here. I was having a late night cup of soup. Ah, life's simple pleasures...
Hi Joe like you are explaining about intermittent use of power, put the power on coast then another blast of power what about in between the periods of coasting some sort of solar sail I recall watching about the issue of using a sail to trap solar wind are power I don't know whether it's a wind or a power?, surely combining some of the ideas, and incorporate slingshot from any nearby bodies of mass for example planets moons
LOL when you talked about using EM fields to create the warping of spacetime, I thought "Philadelphia Experiment?" I know that is BS but it's so ingrained into our legends that it was the first thing that entered my mind. 😁
I refuse to believe that the speed of light is our limit.
Even in the face of reason, knowledge, and logic I still refuse. There's too much cool stuff out there.
I still foolishly hold out hope that we'll discover something that allows us to bypass it.
I'm hardly an expert, but my understanding is that the speed of light is also the speed of causality, meaning that if we traveled somewhere faster than light we'd arrive before we departed. It's an unsolvable paradox at current technological development, but there is hope, the alcubierre(spelling?)drive creates a bubble of spacetime aeound the subject ship and moves the bubble with the ship inside, allowing us to stay within our own timeline but still travel faster than light. Cool stuff, I encourage you to look into it yourself as I probably bollocked the explanation somewhere in there.
@@levilandes1719 Unfortunately alcubierre drives still cause causality issues.
en.wikipedia.org/wiki/Alcubierre_drive#Causality_violation_and_semiclassical_instability
Things like warp drives and wormholes that get around light speed by shrinking space or creating short cuts in space are called apparent FTL. The ship never moves through space faster than light but they still wind up at their destinations faster than light due to trickery with space compression. While apparent FTL gets around the speed of light limit from relativity, it does still cause causality issues though. Causality doesn't care how you got a ship from point A to point B faster than light, it doesn't care if you did it by moving through space at FTL speeds, or by taking a short cut, it just cares that you crossed a light year in less than a year. If an alcubierre ship can take you to Alpha Centauri in less than 4 years that still counts as apparent FTL, and since it can work two way you can use it to transport information back and forth and cause causality violations.
en.wikipedia.org/wiki/Faster-than-light
@@planetfall5056 I am not a physicist. I am also pretty sure that causality is not a thing.
Einstein sort of doomed us; since there is no favored frame, and all orderings of observations represent a point of view which is valid -- there is no time. Everything in the history of the universe happened once, all at the same frozen instant -- what we see is just our particular perspective. This is a serious 'time' catastrophe. The problem is that while it seems like Einstein was wildly wrong, his predictions still keep passing every darned test we can devise.
Enter the standard model of quantum mechanics -- it cannot explain time either. It works, and passes every darn test we can devise -- but it insists that there no so such thing as 'locality'.
Modern forays into theoretical physics (trying to glue these two unruly beasts together) often try to find common ground in a 'timeless physics' -- where time, locality, causality, and other things which we have long assumed were fundamental -- all arise as emergent properties, made up of other 'more-fundamental' stuff.
When all is said and done, causality might not be a fundamental at all. We might find that the Causality Ordering Principle doesn't hold. No guarantees, of course, and the regimes for doing fancy stuff might be well outside our reach for the next century or more... but the new physics could be quite exciting.
If we manage to tap into a dimension where speed and time are irrelevant factors, then yes, we can in fact travel 'faster' than the speed of light. Whether this tech is a few decades or a few millennia into the future remains a mystery.
@@mikitz I was actually thinking of extra dimensional travel.. I think Joe touched on it but I'd love to see more on the concept. Watching theoretical 4 dimensional objects seemingly pop in and out of reality is fascinating
Hey Joe have you seen the remake of lost in space on Netflix? I highly recommend it. Thanks for the content. Love your vids
As an old fan I disliked the new series, but the quality was good.
Didn't know there was an old series until after I seen the new one. I absolutely love it
The story and visuals were fantastic
I need to watch season 2.
I enjoyed the new version as much as the old one. You have to think of them as 2 separate entities. Watching this video made me think of the new version. (Spoiler) we had to steal the tech in order to travel through the universe.
That's why l like Joe soooo much - he always makes the impossible possible! 😎
There is a book about a generation ship, I can't think of it off the top of my head, but because of the time involved, the crew de-evolved similar to HG Wells "time machine".
And in the time this took the human race figured out faster then light travel. That idea pops up throughout sci-fi, my first encounter of it was douglas Adams hhgtg series and the planet Rupert.
The lesson to take away is eventually the problem will be overcome.
Oh I was so hopping for the infinite improbability drive. :p
I finally decided I would subscribe to Curiositystream. The link below is for Brilliant. I had to type the link. I gave up.
Sorry! I put the wrong link in there. Here you go: www.curiositystream.com/joescott
@@joescott It was a joke. I typed the link and subscribed. But now that I got an answer from you, I'd say it was totally worth it.
Keep up the great work.
I'm glad you mentioned Arthur C. Clark. 60 years before the Wright brothers, no one would have believed human flight possible (aside from hot air balloons). 60 years after the Wright brothers, we were putting people into space.
I absolutely love the Spaceballs reference 🤣🤣
If we're on the "immortality" side of the singularity, then if it's possible to go faster than light, we'll see it solved by the AI that gave humanity eternity🤓