imagine going to another star system and finding a stellar engine stuck running because the civilization that built it died. that would make one hell of a good scifi story
They do mention the engine's acceleration produced compared to that which planets experience and give a rough numbers for the energy calculations. I think the hardest part was finding proper materials to take long term sustained damage or be resistant to the thermonuclear heat along with sun's heat.
Yeah,I wonder how would this machine prevent its own vapourizing ? It's stated that it's capable of giving the Sun an acceleration of 10^-9 m/s²,this gives a thrust of about 2e21 Newton.The exaust velocity is stated to be 0.01*c,this gives an effective power P=1/2*2e21N*0.01*c≈3e27 Watts.That's nearly 8 times solar luminosity.Even assuming an efficiency of 90% the machine would still need to manage the heat of a star.Since it would be much smaller than a star(i guess 😅)how would it remain solid instead of becoming plasma?
@@ShokkuKyushu yeah, i mean i get that due to magnetic field it won't directly touch the material, but will i still be able to take the sustained heat? even the fusion reactors on earth do it for barely microseconds, they need steam cooling evaporation chambers. with vacuum of space it'll be even harder, so maybe we'll need to form a swarm if them in orbit around sun & firing for small intervals then cooling until orbit is completed for its firing again.
It’s hard for us to comprehend because we have such a short lifespans. Any civilization with that much technology wouldn’t really have to worry about age or disease most likely they probably could live for thousands of years and in all reality they’re probably not gonna ever have to worry about Rall resources because there’s just so much of it out there. There’s a singular asteroid relatively close to us with 96 quintillion dollars worth of gold alone for example
I ran across your reactions yesterday and have watched several video's, Thank You, I enjoy what you have to say..Thanks for sharing your knowledge ..Thanks for teaching!..
They looked into everything you can think of and more in the peer review. The only thing the thruster has to overcome is the suns gravity. The force of the mass being vaporized and shot off the sun is what will accelerate it. Force over time is what matters.
It doesn’t, it has to overcome the force of the gravity and the force of the thruster itself (Fa + Fg) it will have to be slightly more powerful that the engine we’re using to move the sun itself
People think this is such a crazy idea but if you look at how far we have gotten with technology its hypothetically possible. I don’t think its about questioning if it is technologically possible (because this is hypothetically possible), but questioning if humans are able to come together and put their differences aside and accomplish the task.
5:50 the death star is, at its core, a moon-sized lightsaber. It's powered by kyber crystals and sits well in the realm of science fantasy. If you want to do the math on that go ahead, but I'm tired of people looking at science fantasy, mistaking it for science fiction, and saying star wars is unrealistic because it *literally has magic in it*
10:20 Talking about a civilization that may change form during the operation of this rocket. I suddenly had this vison of a fantasy novel, with some sci-fi elements. So a medieval/feudal type setting, where a long time ago civilization fell and much knowledge was lost. But the major religions now revolve around "The Pillar of Heaven" in the sky. That holds up the Sun and protects them from danger.
By accelerating the sun you're not just moving it from one point to another, you're changing the shape of it's orbit around the center of the galaxy, so the short answer is it depends on what shape you want your orbit to be in, but probably not
Yeah great answer your just altering it’s vector relative to the super massive black hole at the centre of our galaxy, so no, you wouldn’t need to slow down afterwards given you accelerate our sun through the correct vector
It kind of just depends on whether that would actually be necessary in the first place. The envisioned scenario Kurzgesagt gave was basically just "we need to GTFO the way of something else," not going to a specific destination. Perhaps if going along an intergalactic route to go to another galaxy, an ending slowdown would be needed.
My greatest concern regarding the Caplan thruster is where the exhaust beam is being aimed. Nothing quite says "deadly plasma beam" more than that thing. I honestly think being superfried by the giant mirror is more survivable than being on the recieving end of that exhaust plume/beam. O_O
As the "engine" is balancing between the sun and the oxygen jet, won't it be subject to extreme pressure? Like squeezing a can between your two hands, a system is only as strong as it's weakest link. Are there any materials that can stand the force required to move the sun in such an elaborate configuration?
now the whole timeline thing of 50yrs with nasa and with this stellar engine is going with the idea that FTL is impossible, if true then this is literally the best you can get. BUT if FTL is possible then this method would be extremely slow and inefficient. BUT what we currently know about the universe points to a no FTL life. These systems that are designed here are to be feasible within known sciene and materials showing that today we could in theory build this thing right now. Whereas if we try to account for unkowables = FTL we can set ourselves up for failure
So, where's reaction? There's no need to repeat slowly what Kurzgesagt's video already saying. Did you, as (at least in theory) competent engineer made any calculations? Did they match? Is it possible to build? How match would it cost?
why would anyone bother with something that will take longer than our lives for people we'll never know and who may never exist? We got our own problems and all the resources that would be put into this would be better spent with improving our lives while we're still alive. If something more immediate was predicted to happen, like our sun going supernova in the next century, it would be much more economical to make large space crafts that can house millions of people collectively with all the amenities we'd want, kinda like starships in startrek, and just leave to solar system and live on those.
