Post B5aLpjwd2MWHOdvkgq by kaifi@pitha.social
 (DIR) More posts by kaifi@pitha.social
 (DIR) Post #B5Z9FaI044gEPyxaLI by stux@mstdn.social
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       I got something stuck in my brain for some time:Let's say we want to travel to another star that is 4 light years from Earth and we keep accelerating with 1.5G to half way, turn around and decelerate the rest of the wayIf we keep accelerating and getting closer to the speed of light our time slows relative to EarthSo from Earth it seems like 4 light years but on board it won't be experienced for the same durationThe distant stays the same but the time passes drastic differentRight?🤔
       
 (DIR) Post #B5Z9OpjnzsO8w9NNjc by stux@mstdn.social
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       Footnotes:- forget the energy / fuel required- max speed ALWAYS stays under speed of light
       
 (DIR) Post #B5Z9W3GY69BCv98LKa by mark@mastodon.fixermark.com
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       @stux correct. What you're bumping up against is the general theory of relativity. Special theory of relativity deals with the behavior of different inertial frames moving at different velocities relative to each other. But then general theory adds in what happens when you accelerate and shift from one of those frames to another frame. I can't pretend to understand all the math, but it is general relativity that both explains why it is the people in the rocket, if they turn all the way around and come back to Earth, who are younger than the people who stayed on Earth... And why we sitting down here in our gravity well experience time a tiny, tiny fraction more slowly than the GPS satellites orbiting the planet do. Because a rocket ship accelerating and the constant acceleration of standing around in a gravity field are exactly the same as far as the theory goes.
       
 (DIR) Post #B5Z9hp9iNxSydLYC1o by WenhamToo@mstdn.social
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       @stux According to Relativity, distance perpendicular to the direction of travel will shorten as you approach c.So time slows down, and distance gets shorter.If you look at a star a thousand light years away, the photon's point of view is not just that it took zero time to reach your eye, but your eye’s lens and the surface of the star were effectively in contact with each other.
       
 (DIR) Post #B5Z9lhjpuAxomsIQeO by funguy2playwith@mastodon.online
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       @stux there is an excellent explanation for this here:https://youtu.be/8FT-oz9aZU4?si=6yB6OiRNRhmihasz
       
 (DIR) Post #B5Z9n1cDUJakizMV9s by stux@mstdn.social
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       @mark I wonder to how far this goesIn theory we could reach distant stars with time dilation if we can extend our lives that way(again not talking about the requirements)
       
 (DIR) Post #B5Z9qFkdO7A5R0q32u by stux@mstdn.social
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       @funguy2playwith LOL That was the video that brought this in my head a while backIt keeps getting back to me, it's almost.. hah
       
 (DIR) Post #B5ZAGBGmfkjJ45EulU by stux@mstdn.social
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       @funguy2playwith Totally forgot..The expansion of the universe
       
 (DIR) Post #B5ZAL8T8Vs1ZpINc8m by stux@mstdn.social
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       @mark Got my answer Ofc we got the expansion of the universe
       
 (DIR) Post #B5ZKJ7BBKslUmzen6u by Chancerubbage@mastodon.social
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       @stux Isn’t that exactly the acceleration Hail Mary uses? They did the math for you.There are entire reddit groups dedicated to accelerating at 1 g because that is what our biology expects. I’m posting an image to keep with in the 500 characters of my Masto client. Sorry no alt text it might exceed character limits too. It basically says witin the solar system the time dilation would not seem drastic yet- only interstellar distances.
       
 (DIR) Post #B5ZUx7AfmiJ1tA8BRA by argonaut@mastodon.social
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       @stux no, the distance shortens and the time goes faster because they’re the same thing (spacetime), but technically it depends on who’s observing
       
 (DIR) Post #B5ZgYQbFbxK4M8Ycym by kaifi@pitha.social
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       @stux i am genuinely curious on how you get such profound thoughts while literally running 5-6 instances 😭
       
 (DIR) Post #B5ZwIR9DPBf8gjqC5g by c2p2@mastodon.social
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       @stux Hold my beer. Let me check. I’ll come back to you.
       
 (DIR) Post #B5aIkheLqGOyy8HuqG by f4grx@chaos.social
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       @kaifi @stux each instance makes it deeper.
       
 (DIR) Post #B5aIki5eCmEiKn3iO8 by kaifi@pitha.social
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       @f4grx @stux 😭 😭 😭
       
 (DIR) Post #B5aIkiMfBVqbBZ1IuW by stux@mstdn.social
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       @kaifi @f4grx I mean, everyone has their way of "falling to sleep" right :blobcatgiggle: Space always helps me a lot :sleep:
       
 (DIR) Post #B5aLpjwd2MWHOdvkgq by kaifi@pitha.social
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       @stux @f4grx i cannot possibly imagine you sleeping under the stars