dave200204 t1_j1jbe2i wrote on December 24, 2022 at 8:38 PM

There is a Russian cosmonaut who got stuck up in one of the space stations for a really long time. I believe it was Mir. Russia was having some difficulties at the time and they couldn't send up a replacement for him. He experienced something like 0.18 second of time dilation by being up there for so long. He is credited with having time traveled and holds a world record for it.

OverJohn t1_j1jc87k wrote on December 24, 2022 at 8:44 PM

I don't think it could be that much because you would have to spend over 10 years on ISS in order for you to "lose" 0.18 seconds.

dave200204 t1_j1jd1yf wrote on December 24, 2022 at 8:50 PM

Just looked it up and you're right. It was 0.02 seconds. 748 days aboard Mir over several missions. https://www.amnh.org/exhibitions/einstein/time/time-travel#:~:text=Cosmonaut%20Sergei%20Avdeyev%20spent%20a,he%20never%20traveled%20in%20space.

There is also a YouTube video about it on the "Half As Interesting" channel.