have you heard of the twins paradox? Thats not possible yet but time dilation in that takes years.
Will's AMA
Well, that makes sense because obviously, Stella is not an inertial observer, since her velocity changed on the return journey. It's a pretty cool idea, shows just how creative Einstein was.
Yes indeed, time dilation, space time, string theory, everything Einstein worked on is very interesting.
I have another interesting vid which focuses more on the time dilation part than the paradox, will share that too
https://www.youtube.com/watch?v=F5PfjsPdBzg
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or minutes I think act