Guys, Please, Timecode your videos, it helps more than I can say. Also, here are the timecodes for this video: 00:50 Using Sunlight to Propel Spaceships 05:39 Thrusters that eat Teflon 10:20 The Future of CubeSat Propulsion 16:28 How to Get to Mars in 40 Days 21:57 Photonic Propulsion: Mars in 7 Days?
My favourite part about space travel, especially interstellar travel, is that by the time we get one thing on it's way, we've already started working on a thing that will likely get there before that one. And yet! We still send the slower one, just to see if it works.
"If I live a long time And if mankind turns once more To dare a present danger To seek a distant shore Then I may yet see pictures From other foreign skies And know them for reflections In my childrens' questing eyes And I have seen the harbors And the ships are proud and bold And the children born this morning May already be too old...." -'Harbors' by Anne Passovoy
Dear Frau Passoway: Thank you ever so much for your wonderfully wise and succinct poem. I respect your ensite. Hopefully, Mr. Elon Musk has the continued ability to kick NASA and its DIA, NRO, NIA, and the not to be mentioned 27 other intelligence agencies who fully control NASA (despite what the naïve public foolishly believes,
I apologize for both misspelling your name, correctly, Frau Passovoy, and the damnable idiotic uncontrollable unintentional sending of my unfinished comment. Prof/Dr./Col. G. Gerlach
@@R2000GSA It's actually part of a song, one of my favorite filk songs. It's won a fair number of awards. You can probably find the full lyrics online. I couldn't find any performances by the original artist on UA-cam or I'd've linked to that!
After five minutes I dreaded the end of the video because so much information had already been conveyed. The information to video length ratio is top notch for this channel. Still not too fast to follow but lots to learn from a few minutes. Thank your for that! Also liked the alternation between "presenters"(?) to settle info blocks with different persons in mind. Helps with remembering ;)
@@janerecluse4344 well the Milky Way isn’t going in a circle, but the Solar System is (around the supermassive black hole) and the Earth (around the Sun).
@@Eastsidet03 Isn't the galaxy traveling arounnd the supermassive black hole at it's center? If true, who's to say that all of the galaxies aren't orbiting an even larger, yet-discovered object.
@@Eastsidet03 Thank you for the clarification. I had a feeling I was missing something as I hit the send button. I'm grateful that being wrong in these particular comments sections result in learning something instead of general hazing , as is common in the rest of the internet. Thank you.
@@jovanpantelic8536 No, he did say that. What do you mean? What do we miss? Edit: AH, not pay attention, but watch a bit more. It IS a half hour long vid, nobody watches all of it before commenting. :P
@@gordonn4915 Well... maybe . Truth be told , advancing active/passive shielding techniques may indeed yet come to strongly mitigate the much feared space-radiation hazard . The likely unbeatable problem however , is the "Biosphere Syndrome" . Humans trapped together in a small tin can WILL turn on each other , endangering both that mission and those to come . VASIMR itself is potentially fatally flawed ; it's power-to-weight ratio is abysmal , so not as much help as is needed . This is why NASA is also looking hard at revamping the older nuclear-thermal technology . In space , brute-force does have a place . *To examine some possible near-future space-propulsion systems , read my post at : quora.com/How-do-impulse-engines-work/
Great video, but I'm disappointed that there was no mention of Nuclear Thermal Propulsion. Engines for such a system were built & tested in the 1960s ~ 70s. And they worked well. They also have about 8 or 10 times the Specific Impulse of chemical rockets. How about a video on that topic - I know you have already made one about Project Orion (nuclear bomb propulsion). I watched (and liked) it.
For those wondering about how photons have momentum, we need to look at e=mc^2 That is the equation for finding the total energy of a stationary particle, or simply the energy that the particle itself contains, rather than the energy propelling it. However, when a particle is in motion, there is a slightly more complex equation to calculate it's energy. e^2 = (ρ^2)(c^2) + (m^2)(c^4) As photons have no mass, we can remove the second half of the equation and simplify, leaving us with: e = ρc ρ, the Greek letter rho, is used for momentum. This can be rearranged to show that the momentum of a photon can be found by dividing its energy by the speed of light, c.
I've often wondered if when going to another star system via Solar sail if the photons of the incoming star would slow us down. For smaller trips such as to Mars perhaps we could use the atmospheric drag to slow us down.
"we have no idea how to slow them down" there, thats it right there you just explained it, this solar light stuff is to be used like a railway, with a laser shiner at either end so as to speed it up shooting at the craft from one end, and once a certain threshold of distance is reached have the other end start shining to start slowing it back down to reach safe enough speeds in order to dock/land, in other words this isnt really a first-time space nomad type tool, more like an after-you-colonized-both-planets type thing
"Very, very slowly...... but they get the job done" Gee, way to make a person feel great about their thrusting, that's as harsh as giving a participation medal LOL
That idea of photonic/laser propulsion for manned missions is only practical between locations already travelled to - to have another "braking" laser at the other end of the journey. Long distance missions of investigation to the nearest star systems, reaching maybe 25% of light speed, would need some equally ultra-high-speed sensors to do some "ultra-quick detecting" at the other end before they blast past in to the far distance!
Solar systems are big, at 25% the speed of light you'd have a couple days to pass through the solar system. Once we built up the capacity for such missions we could send several through with a much lower marginal cost. I believe that's the idea.
Before you go anywhere, you need to know how to navigate. So you're going to need a telescope (big), a radio telescope (reasonably big). As the only way to navigate is by triangulating pulsars, nebulae and other objects. This is made difficult if you're travelling very close to the speed of light, since you can only see in front and behind. Make a video about that!
I only really heard two ideas in this video. One is carrying something with you to vent for propulsion, the other involves light sails and photons. Both have the same problem - it's a one-way trip. Once you get where you're going, there's no way to come back. You either have to refuel or have another source of photons to push you home.
I am wondering one thing. We can use powerful lasers in order to give momentum to a space sail and propel it to relativistic speeds. That's fine. But, why don't we use something with more momentum and mass instead of light? Imagine the following case: We build a small particle accelerator in the moon, and we use it to shoot hydrogen ions towards a spaceship. We don't really need to reach c, since accelerating the ions to 50% of c, would eventually make the ship to reach that speed. We could even use a magnetic field in the sail, and, in the future where we have a fusion engine, we can just send the fuel through space.
It should be possible to use light emitting propulsion, where you use the counter force applied from photons... Basically an extremely efficient and high power flashlight
One major issue with cubesats is Kessler syndrome - space junk proliferation. I'm appalled that they're even allowed to be launched without a propulsion system to ensure reentry when the cubesat is no longer useful.
If photons are absorbed by electrons, thus changing their orbit in the atom. In solar sails, do electrons then re-emit a photon at a different energy level which allows a net gain in energy/momentum? Or do photons kind of bounce off like a particle, transferring momentum using newton's 3rd law of motion?
If e=mc squared and f=ma then obviously e (light) can provide some a. So solar sails must work. The question is how big the sails would have to be to doing anything interesting.
“If the frequency isn’t exactly right, it won’t excite the ___________ at all.” I’m very familiar with that phenomenon involving thrusting cylindrical shapes through voids - just not as part of an outer space mission.
"propels it just like a fire extinguisher on an office chair". This is a very weird image. Is it something Hank has done because if not, he is, at that moment, travelling through an alien universe. Of course, maybe that is what he and his co-hosts do for fun. Hank: Ok everyone, line up your chairs and place your extinguishers. Stop! No Caitlin, you can't use the giant one from the engineering department. Reid, don't fight the extinguisher, just let it balance itself Remember, the chair that goes the furthest in a straight line wins so no wormholes or radical physics. Everybody ready? All the crew: Yes, yes, stop talking and let us play! Hank: Ready, set, pull your plugs! Tremendous crashing and breaking amid oooohhh's and screams from people dodging super-powered chairs. Hank: Well, its a little hard to determine a winner but I think the one sticking out of the wall has got it. Oh boy, am I in trouble with housekeeping.
Wouldn't the laser firing spacecraft be putting as much force on itself as it sends to the target craft? Would it need thrusters to hold it's position?
Imagine De-Star got hacked and starts raining down laser on a country... And as soon as the hacker lets go the de-star, the hacker renamed the de-star to deez-nuts. Lol
Photons have momentum *because* they travel at the speed of light, which is the universe's physical analogue for "infinite" speed. This is why massive particles *cannot* travel at c, while massless particles *must*. Absolute Zero and the Planck Temperature exist for similar reasons; actual infinities cannot exist in the real world, so the universe requires analogues so you get meaningful values when you multiply and divide by zero (that's an excessive simplification).
This particular picture of Perspective Actuality needs a rewrite to admit logarithmic condensation modulation interference coordination positioning by Pi-bifurcation e-Inflation +/- probability in Singularity potential possibilities of real-time zero-infinity difference distribution, as indicated by Einsteinian Curvatures in the context of E=mC² mass-energy-momentum condensation. Photon-phonon location is established in Math-Phys-Chem and Geometry here-now-forever formatting of continuous creation connection cause-effect of wave-packaging pure relative motion. Definitely a job for new Student reiteration.
I use Neutron Stars…first I low fly a Sun with a scoop for fuel…then I short warp to a mapped Neutron Star..where I fly into the cone..the cone will spit me out at 2000c or 2000xFTL…using the scoop also super charges me..after exciting cone I engage warp drive….I’m jumping 100-150 LY in minutes…..using a Neutron Highway…I travel millions LY….I’ve been to the Galactic Core
I always wondered if it would be possible to use lasers mounted on a spacecraft to move around. You can use electricity to create propulsion without need of reaction mass. My understanding is that we currently don't see any way to create a laser small enough, light enough, and powerful enough to have any real effect. Can anyone tell me if there's any concept papers out there on it?
@@danieljensen2626 a lot of that is largely because they will be expected to continue to provide propulsion over solar system sized distances, literally hundreds of millions of kilometres away. This wouldn't be an issue for something carrying the laser with it.
🤔 What about radioactive decay... eg a chunk of radioactive material (preferably waste) enclosed in a lead bow with a small hole. Surely this would produce a small ammount of thrust with the possible bonus of getting rid of nasty muclear byproducts. Also, Reid looks strange without the beard 😁
Thrust to weight ration is just too low. As is, you need to measure carefully to even notice... Solar sails do pretty much the same thing but with much better T/W. And a note about solar/laser sails: Carefully planned trajectories using gravity assists can actually maneuver quite a bit and even stop. E.g. going to Mars could involve swinging around Mars so that the laser can hit from the direction of travel, reducing you velocity.
@@billbaggins Well... A RTG (RadioThermal Generator) hooked to an ion or plasma thruster could be argued to be "a bunch of nuclear waste powering a spacecraft"... ;) Also, the Cassini spacecraft seems to have had some problems with the radiation from its RTG actually pushing it off course - but now we're talking about many years of travel to get a noticeable velocity, and the problem comes mostly from having to counter the thrust so that all precision maneuvers end up correct.
Laser Drive is the way to go. A few big lasers can be used to speed up and slow down space craft over the whole Solar System and has the bonus of you can fry any Aliens how come over
How about pulsed nuclear propulsion? It was proposed for the Deadelus Project. Dump atom bombs behind the ship, detonate them. Have a strong pusher plate and the explosions will push it forward.
@@danieljensen2626 It was actually explored quite seriously for Project Daedalus as plans for building an interstellar colony ship. It was actually shelved because of the Nuclear Test Ban treaty which prohibits the testing of nuclear weapons in space. There other treaties (I don’t recall the name of these) that prohibit orbits weapons, and while this this is bent a lot nuclear weapons in orbit would be a little hard to overlook.
Genuinely curious but is "radiation pressure" a catch-all concept for momentum as far as photons go? My understanding so far is that photons can induce photoelectric effects such as compton scattering, pair production and the like and by these effects, they transfer their kinetic energy to particles around them while obeying the conservation of momentum. So, I guess my question is really this: Since kinetic energy is more or less synonymous to temperature as temp is just the measure of KE, and since a difference of temps can cause a differential pressure effect like in the convection of liquids - is radiation pressure like the top level term that envelops those ideas...but in space? if so, then that's hella cool but I feel like I might be missing something so If anyone can add to this, I'd be grateful - about to go use some google-fu to see what I can find on it lol
Launch a solar sail spacecraft. 1 year later launch a second solar sail spacecraft on the same path, equipped with a nuclear powered hi power laser with a tracking system to detect the first spacecraft and aim photons at it's sail. 1 year later launch a third solar sail spacecraft on the same path, equipped with a nuclear powered hi power laser with a tracking system to detect the second spacecraft and aim photons at it's sail. Rinse and repeat.
Next I am sure someone will look into transporting an innocent Beagle belonging to an Admiral from Earth to Mars, instantaneously. I hope the engineer who does it is Scottish.
It's crazy how much scientific advancement and breakthroughs NASA has accomplished. Teflon, strong plastics and polymers, GPS. Itd be crazy to think what the world would look like without that big office of nerds. Compare that to other similar groups Chinas space agency and it's kind of shocking what they've accomplished
Sad but true quick answer to when these innovative engines will actually be built: Looking at NASA's current annual budget and these bureaucratic knuckleheads in charge: NEVER.
Lockheeds Vibration Engine is how they currently do it. They've been around since the late '50's and are the standard propulsion on the space force top secret crafts. Oh yeah this is beyond HIGHLY CLASSIFIED, you're welcome.
The people that operate these craft have been given special prescription meds that fully activates the hypothalamus. Again beyond HIGHLY CLASSIFIED so shut up about it
I feel like solar sails wouldn't really work that well. I mean If you use them to move from Earth to Mars or something sure but what about the return trip.
But the laser is coming from the spacecraft, so wouldn't it push back the same amount as it pushes forward, - everything has equal opposite - making it go nowhere?
Guys, Please, Timecode your videos, it helps more than I can say.
Also, here are the timecodes for this video:
00:50 Using Sunlight to Propel Spaceships
05:39 Thrusters that eat Teflon
10:20 The Future of CubeSat Propulsion
16:28 How to Get to Mars in 40 Days
21:57 Photonic Propulsion: Mars in 7 Days?
It seems they have now timecoded the video 👍
Ty
10:35 - A Rubik's cube is 5.7 cm on a side. 10 cm on a side is much larger - over 5x the volume of a Rubik's cube.
You've heard of Muscle Hank, now get ready for Lean Reid
Beardless Michael
My favourite part about space travel, especially interstellar travel, is that by the time we get one thing on it's way, we've already started working on a thing that will likely get there before that one. And yet! We still send the slower one, just to see if it works.
We know how to do warp propulsion. Why not invest in actually building a ship with warp engines?
@@Kevin-bl6lg...no we don't
* Wads up his towel to use as a makeshift pillow, pulls out The Guide and types in "Universe, ways to travel', and settles in to watch this video *
This is an awful comment and you should be embarrassed.
"CrabmanSteve" seems a bit... crabby 😂🤣
You're one hoopy frood who really knows where your towel is! 😊
@@crabmansteve6844 u sound miserable are u ok?
@@greedo69 I was miserable after reading that cringe ass comment.
Wow, it’s weird to hear Reid’s same voice coming out of his five year younger self!
It's the same video from way back but he redubbed it with his now voice just for this.
@@LimeymanZero no
"If I live a long time
And if mankind turns once more
To dare a present danger
To seek a distant shore
Then I may yet see pictures
From other foreign skies
And know them for reflections
In my childrens' questing eyes
And I have seen the harbors
And the ships are proud and bold
And the children born this morning
May already be too old...."
-'Harbors' by Anne Passovoy
Dear Frau Passoway:
Thank you ever so much for your wonderfully wise and succinct poem. I respect your ensite. Hopefully, Mr. Elon Musk has the continued ability to kick NASA and its DIA, NRO, NIA, and the not to be mentioned 27 other intelligence agencies who fully control NASA (despite what the naïve public foolishly believes,
I apologize for both misspelling your name, correctly, Frau Passovoy, and the damnable idiotic uncontrollable unintentional sending of my unfinished comment.
Prof/Dr./Col. G. Gerlach
@@R2000GSA It's actually part of a song, one of my favorite filk songs. It's won a fair number of awards. You can probably find the full lyrics online. I couldn't find any performances by the original artist on UA-cam or I'd've linked to that!
Treasure planet solar sails ohhh yes!!
Such an underrated movie!
@@Kirasuva says every closet furry
@@vavra222 nah, I wouldn't be in the closet if I was. Furries seem great!
@@Kirasuva Youre probably right, all furries i knew and saw were mostly a bit too overt and a bit too friendly.
Degeneracy at its finest.
Who needs alien catgirls when you have steampunk spacecraft!
After five minutes I dreaded the end of the video because so much information had already been conveyed. The information to video length ratio is top notch for this channel. Still not too fast to follow but lots to learn from a few minutes. Thank your for that!
Also liked the alternation between "presenters"(?) to settle info blocks with different persons in mind. Helps with remembering ;)
Been watching scishow for years and I'll watch them for many more
Technically, you're travelling the universe right now!
Well, yeah, but just in a circle
@@janerecluse4344 well the Milky Way isn’t going in a circle, but the Solar System is (around the supermassive black hole) and the Earth (around the Sun).
@@Eastsidet03 Isn't the galaxy traveling arounnd the supermassive black hole at it's center? If true, who's to say that all of the galaxies aren't orbiting an even larger, yet-discovered object.
@@gregmerritt9366 I meant the whole galaxy including the black hole, is moving at or around 500,000 mph (805,000) kmh towards the great attractor.
@@Eastsidet03 Thank you for the clarification. I had a feeling I was missing something as I hit the send button. I'm grateful that being wrong in these particular comments sections result in learning something instead of general hazing , as is common in the rest of the internet. Thank you.
"A Fire Extinguisher on a Office Chair" :-), I wonder how many bored office workers has actually tried this trick out.
WAAAAAALLLLL-EEEEEE
I sure love these videos! Thank you!
The solar sail thing was done in Star Trek in the 90s
They’re planning a mission for 2016?!?
Checks calendar
I think they’re a bit late.
You need to wach video ones more. And this time pay attention
@@jovanpantelic8536 No, he did say that. What do you mean? What do we miss?
Edit:
AH, not pay attention, but watch a bit more. It IS a half hour long vid, nobody watches all of it before commenting. :P
Cat on Crack Nobody? You're disproven.
@@CritterKeeper01 There are still people with attention spans longer than 10min? Or do you take notes?^^
@@felix2315 I do.
We don't nearly hear enough about VASIMR these days 😢
I'm sure they're working on it, but if it's only one big group they may only release info every couple years.
Renamed, now NASAs preferred way to assist power to Mars. Radiation measurements have ruled out chemical rockets.
@@gordonn4915
Well... maybe .
Truth be told , advancing active/passive shielding techniques may indeed yet come to strongly mitigate the much feared space-radiation hazard . The likely unbeatable problem however , is the "Biosphere Syndrome" . Humans trapped together in a small tin can WILL turn on each other , endangering both that mission and those to come .
VASIMR itself is potentially fatally flawed ; it's power-to-weight ratio is abysmal , so not as much help as is needed . This is why NASA is also looking hard at revamping the older nuclear-thermal technology .
In space , brute-force does have a place .
*To examine some possible near-future space-propulsion systems , read my post at :
quora.com/How-do-impulse-engines-work/
@@AustinThomasPhD The last thing I can see from them was a press release in August 2019 and that's it.
4:22 "well served". It depends on who is serving it, myself, agassi, selena, federer?
Electrons to microwave: "You just don't excite me anymore", as the door (valve) slams closed.
Great video, but I'm disappointed that there was no mention of Nuclear Thermal Propulsion. Engines for such a system were built & tested in the 1960s ~ 70s. And they worked well.
They also have about 8 or 10 times the Specific Impulse of chemical rockets. How about a video on that topic - I know you have already made one about Project Orion (nuclear bomb propulsion). I watched (and liked) it.
Cool video! Reminds me of the board game High Frontier 4 all.
These highlight videos are great!
Great content keep it up.
1:25
Al: "Hello."
Max: "Hello."
Louis: _"HAY GURRL"_
That's fuh-neeeee!
For those wondering about how photons have momentum, we need to look at e=mc^2
That is the equation for finding the total energy of a stationary particle, or simply the energy that the particle itself contains, rather than the energy propelling it. However, when a particle is in motion, there is a slightly more complex equation to calculate it's energy.
e^2 = (ρ^2)(c^2) + (m^2)(c^4)
As photons have no mass, we can remove the second half of the equation and simplify, leaving us with:
e = ρc
ρ, the Greek letter rho, is used for momentum. This can be rearranged to show that the momentum of a photon can be found by dividing its energy by the speed of light, c.
Usually it's just a p, I can't think of too many cases where it's traditional to use rho for momentum.
Very interesting video thanks a lot
Caitlin is with out doubt. 100% Lady Glitter Sparkles ❤️
This is nothing more then a flash back episode. You know the ones like ST TNG used because they already spent the effects budget for the year.
I've often wondered if when going to another star system via Solar sail if the photons of the incoming star would slow us down. For smaller trips such as to Mars perhaps we could use the atmospheric drag to slow us down.
Cubesats sound super adorable
Great video thank u
You can always tell how old a Sci Show video is by how short Reid's bears is!! 😅
"we have no idea how to slow them down"
there, thats it right there you just explained it, this solar light stuff is to be used like a railway, with a laser shiner at either end so as to speed it up shooting at the craft from one end, and once a certain threshold of distance is reached have the other end start shining to start slowing it back down to reach safe enough speeds in order to dock/land, in other words this isnt really a first-time space nomad type tool, more like an after-you-colonized-both-planets type thing
If you're going to another star system, you use Sol to get you moving towards your goal, and your destination start to slow you down.
"Very, very slowly...... but they get the job done" Gee, way to make a person feel great about their thrusting, that's as harsh as giving a participation medal LOL
17:29
I'm no rocket scientist, but you made it sound like monopropellant.
Sometimes I wish I could boldly go where no man has gone before.
@Toughen Up, Fluffy lmfao... Underrated comment
That idea of photonic/laser propulsion for manned missions is only practical between locations already travelled to - to have another "braking" laser at the other end of the journey. Long distance missions of investigation to the nearest star systems, reaching maybe 25% of light speed, would need some equally ultra-high-speed sensors to do some "ultra-quick detecting" at the other end before they blast past in to the far distance!
Solar systems are big, at 25% the speed of light you'd have a couple days to pass through the solar system. Once we built up the capacity for such missions we could send several through with a much lower marginal cost. I believe that's the idea.
Good one!
Before you go anywhere, you need to know how to navigate. So you're going to need a telescope (big), a radio telescope (reasonably big). As the only way to navigate is by triangulating pulsars, nebulae and other objects. This is made difficult if you're travelling very close to the speed of light, since you can only see in front and behind. Make a video about that!
I only really heard two ideas in this video. One is carrying something with you to vent for propulsion, the other involves light sails and photons. Both have the same problem - it's a one-way trip. Once you get where you're going, there's no way to come back. You either have to refuel or have another source of photons to push you home.
Or you bring enough fuel for the return trip...
I am wondering one thing. We can use powerful lasers in order to give momentum to a space sail and propel it to relativistic speeds. That's fine. But, why don't we use something with more momentum and mass instead of light? Imagine the following case: We build a small particle accelerator in the moon, and we use it to shoot hydrogen ions towards a spaceship. We don't really need to reach c, since accelerating the ions to 50% of c, would eventually make the ship to reach that speed. We could even use a magnetic field in the sail, and, in the future where we have a fusion engine, we can just send the fuel through space.
It should be possible to use light emitting propulsion, where you use the counter force applied from photons... Basically an extremely efficient and high power flashlight
This video proves that Reid is even sexier now because of his luscious beard than he was a few years ago.
One major issue with cubesats is Kessler syndrome - space junk proliferation. I'm appalled that they're even allowed to be launched without a propulsion system to ensure reentry when the cubesat is no longer useful.
If photons are absorbed by electrons, thus changing their orbit in the atom. In solar sails, do electrons then re-emit a photon at a different energy level which allows a net gain in energy/momentum?
Or do photons kind of bounce off like a particle, transferring momentum using newton's 3rd law of motion?
If e=mc squared and f=ma then obviously e (light) can provide some a. So solar sails must work. The question is how big the sails would have to be to doing anything interesting.
You should do a video on aerospike engines😁🚀
So would plasma propulsion create a bunch of exhaust to be picked up by another ship using ionic propulsion?
“If the frequency isn’t exactly right, it won’t excite the ___________ at all.” I’m very familiar with that phenomenon involving thrusting cylindrical shapes through voids - just not as part of an outer space mission.
Well, someone had to say it
🤣🤣🤣
Voids haha u need a better woman 😜
What are the g’ each propulsion creates?
Go go Sci Show
"propels it just like a fire extinguisher on an office chair". This is a very weird image. Is it something Hank has done because if not, he is, at that moment, travelling through an alien universe. Of course, maybe that is what he and his co-hosts do for fun.
Hank: Ok everyone, line up your chairs and place your extinguishers. Stop! No Caitlin, you can't use the giant one from the engineering department. Reid, don't fight the extinguisher, just let it balance itself Remember, the chair that goes the furthest in a straight line wins so no wormholes or radical physics. Everybody ready?
All the crew: Yes, yes, stop talking and let us play!
Hank: Ready, set, pull your plugs!
Tremendous crashing and breaking amid oooohhh's and screams from people dodging super-powered chairs.
Hank: Well, its a little hard to determine a winner but I think the one sticking out of the wall has got it. Oh boy, am I in trouble with housekeeping.
Firstly let's go to the Moon! Then we'd can test space propulsions in the vacuum
Wouldn't the laser firing spacecraft be putting as much force on itself as it sends to the target craft? Would it need thrusters to hold it's position?
VASIMR sounds like taken from Cloudy With A Chance Of Meatballs 😆😆
Oh thank frigg its an older compilation. I thought this younger iteration was him but with a bad case of cancer
The caption option is off on the UA-cam app but I keep getting captions on your video anyway. FYI
I remember Echo. And Echo II.
2:04 Crunchwrap!!
Imagine De-Star got hacked and starts raining down laser on a country...
And as soon as the hacker lets go the de-star, the hacker renamed the de-star to deez-nuts. Lol
The marvel S.W.O.R.D station
Photons have momentum *because* they travel at the speed of light, which is the universe's physical analogue for "infinite" speed. This is why massive particles *cannot* travel at c, while massless particles *must*.
Absolute Zero and the Planck Temperature exist for similar reasons; actual infinities cannot exist in the real world, so the universe requires analogues so you get meaningful values when you multiply and divide by zero (that's an excessive simplification).
Can you look at more designs for spacecrafts an aerospace technology an engineering
The sun also emits solar wind. Solar wind is composed of ions. Ions have mass.
This particular picture of Perspective Actuality needs a rewrite to admit logarithmic condensation modulation interference coordination positioning by Pi-bifurcation e-Inflation +/- probability in Singularity potential possibilities of real-time zero-infinity difference distribution, as indicated by Einsteinian Curvatures in the context of E=mC² mass-energy-momentum condensation. Photon-phonon location is established in Math-Phys-Chem and Geometry here-now-forever formatting of continuous creation connection cause-effect of wave-packaging pure relative motion.
Definitely a job for new Student reiteration.
I use Neutron Stars…first I low fly a Sun with a scoop for fuel…then I short warp to a mapped Neutron Star..where I fly into the cone..the cone will spit me out at 2000c or 2000xFTL…using the scoop also super charges me..after exciting cone I engage warp drive….I’m jumping 100-150 LY in minutes…..using a Neutron Highway…I travel millions LY….I’ve been to the Galactic Core
I always wondered if it would be possible to use lasers mounted on a spacecraft to move around. You can use electricity to create propulsion without need of reaction mass.
My understanding is that we currently don't see any way to create a laser small enough, light enough, and powerful enough to have any real effect. Can anyone tell me if there's any concept papers out there on it?
Yeah, I mean you can tell from the project that needs 100 square kilometers of lasers to propel a little wafer that the math just doesn't work out.
@@danieljensen2626 a lot of that is largely because they will be expected to continue to provide propulsion over solar system sized distances, literally hundreds of millions of kilometres away. This wouldn't be an issue for something carrying the laser with it.
And you can fly
High as a kite if you want to
Faster if you want to
Flying through the universe,
Thinking is the best way to travel.
The Moody Blues
🤔 What about radioactive decay... eg a chunk of radioactive material (preferably waste) enclosed in a lead bow with a small hole. Surely this would produce a small ammount of thrust with the possible bonus of getting rid of nasty muclear byproducts.
Also, Reid looks strange without the beard 😁
Thrust to weight ration is just too low. As is, you need to measure carefully to even notice... Solar sails do pretty much the same thing but with much better T/W.
And a note about solar/laser sails: Carefully planned trajectories using gravity assists can actually maneuver quite a bit and even stop. E.g. going to Mars could involve swinging around Mars so that the laser can hit from the direction of travel, reducing you velocity.
@@henrikgiese6316 Cheers, figure that would probly be the case, just an idea thats been rattling around in my non physicist head😁
@@billbaggins Well... A RTG (RadioThermal Generator) hooked to an ion or plasma thruster could be argued to be "a bunch of nuclear waste powering a spacecraft"... ;)
Also, the Cassini spacecraft seems to have had some problems with the radiation from its RTG actually pushing it off course - but now we're talking about many years of travel to get a noticeable velocity, and the problem comes mostly from having to counter the thrust so that all precision maneuvers end up correct.
Why not use the solar wind to propel spacecraft instead of wimpy light-pressure or ridiculous laser sails?
How fast can a solar sail ship move?
4:27 “two octillion”
Why not solar sails on the cube sats?
They'd be too big, and turning them "on" and "off" would be too complicated.
You know how I’d like to travel in the universe? In an 890J.
Laser Drive is the way to go. A few big lasers can be used to speed up and slow down space craft over the whole Solar System and has the bonus of you can fry any Aliens how come over
Is Teflon renewable?
Double the space laser of course lol
What is "expeeryment"?
How about pulsed nuclear propulsion? It was proposed for the Deadelus Project. Dump atom bombs behind the ship, detonate them. Have a strong pusher plate and the explosions will push it forward.
I think that's more of a fun concept then a serious idea.
@@danieljensen2626 It was actually explored quite seriously for Project Daedalus as plans for building an interstellar colony ship. It was actually shelved because of the Nuclear Test Ban treaty which prohibits the testing of nuclear weapons in space. There other treaties (I don’t recall the name of these) that prohibit orbits weapons, and while this this is bent a lot nuclear weapons in orbit would be a little hard to overlook.
More Rose, please.
Genuinely curious but is "radiation pressure" a catch-all concept for momentum as far as photons go? My understanding so far is that photons can induce photoelectric effects such as compton scattering, pair production and the like and by these effects, they transfer their kinetic energy to particles around them while obeying the conservation of momentum. So, I guess my question is really this: Since kinetic energy is more or less synonymous to temperature as temp is just the measure of KE, and since a difference of temps can cause a differential pressure effect like in the convection of liquids - is radiation pressure like the top level term that envelops those ideas...but in space? if so, then that's hella cool but I feel like I might be missing something so If anyone can add to this, I'd be grateful - about to go use some google-fu to see what I can find on it lol
my brain hurts. but I like it. it's a good hurt
staarrrr trekkin' across the universe...
Launch a solar sail spacecraft. 1 year later launch a second solar sail spacecraft on the same path, equipped with a nuclear powered hi power laser with a tracking system to detect the first spacecraft and aim photons at it's sail. 1 year later launch a third solar sail spacecraft on the same path, equipped with a nuclear powered hi power laser with a tracking system to detect the second spacecraft and aim photons at it's sail. Rinse and repeat.
Anyone else forget he used to shave 😅
Nice
Next I am sure someone will look into transporting an innocent Beagle belonging to an Admiral from Earth to Mars, instantaneously. I hope the engineer who does it is Scottish.
If the Vasimer gets that hot how does it not melt that close? It's not possible to even almost land on the sun
as long as it doesn't use 1.21 gigawatts... then it risks time travel.
yeah, that was stupid... I'm old and tired.
So the secret to space travel is, "Gotta go fast?"
How much friction is in space?
I like Hank, he kinda sounds like Bullwinkle when he pronounces a lot of words, like ex-PEER-uh-mints, or is it just me? We love ya Hank.
It's crazy how much scientific advancement and breakthroughs NASA has accomplished. Teflon, strong plastics and polymers, GPS. Itd be crazy to think what the world would look like without that big office of nerds. Compare that to other similar groups Chinas space agency and it's kind of shocking what they've accomplished
Sad but true quick answer to when these innovative engines will actually be built: Looking at NASA's current annual budget and these bureaucratic knuckleheads in charge:
NEVER.
Lockheeds Vibration Engine is how they currently do it. They've been around since the late '50's and are the standard propulsion on the space force top secret crafts. Oh yeah this is beyond HIGHLY CLASSIFIED, you're welcome.
The people that operate these craft have been given special prescription meds that fully activates the hypothalamus. Again beyond HIGHLY CLASSIFIED so shut up about it
we just need to invent gellar field generators and a warp drive, mount it on a huge cathedral in space and try to stay alive
I think you forgot the main one, warp drive. And I know it works cos I've seen it in a documentary.
Lol
Reid had a baby face 5 yrs ago holy hell 😂
Would De-star be viable for anti-ICBM application?
I feel like solar sails wouldn't really work that well. I mean If you use them to move from Earth to Mars or something sure but what about the return trip.
But the laser is coming from the spacecraft, so wouldn't it push back the same amount as it pushes forward, - everything has equal opposite - making it go nowhere?
3D print the 10kmlasers in space