A few years ago I saw a movie, the title of which I just can't remember.
It was a movie about a crew on a spaceship travelling a long time to a distant planet or system to check on something, or to bring life to this planet.
I also remember: When they arrived OR when some problems occur they found a ship with their same name but with the number "2", like Voyager (fictional name) 1 and 2, and they could not understand why there was a second ship around.
The explanation was that, DURING their travel period, scientists developed a new faster drive, so that a new ship launched later on the same mission arrived at the planet before the first one.
I might remember that this is some known paradox. If you go on a long space journey, the scientific progress that's made can actually make a new ship reach the same destination faster, despite being launched later.
I'm dying to remember this movie - I google all the way down and couldn't find it.
Edit: It was a live action movie and I think it was streamed via Amazon / Netflix. It was an international movie.