system
Given the following post, respond as if you're commenting on Reddit:
human
[General Fiction] In universes where characters are constantly flying interstellar distances and across distant galaxies from earth in instant speeds are they technically time traveling?

 like for instance the  star light that reaches Earth today is how those galaxies were millions of years ago and have probably died out by the time the light reaches us on earth,   so in the universes where they're traveling to the opposite side of the galaxy  or distant galaxies in instances  are they essentially traveling through time if they somehow get there in the time of how the galaxy looked from by the time we see it?
gpt
By real-world physics, moving faster than light is equivalent to time travel. Technically, you're moving through space instead of time like you normally do, but you can cycle around and go back to before you started.

In any universe where FTL travel is easy and time travel is not, it clearly doesn't work that way. Relativity isn't a thing, and going faster than light just means you're going faster than something that goes very fast.

Though there is one other possibility. In Orion's Arm, relativity is true, but due to quantum physics reasons (theorized in real life), any closed timelike curves will collapse, which basically means any time machine will destroy itself. They have wormholes which will never be perfectly in sync, so technically if you pass through it one way it will take you back in time, but if you try to move the mouths of the wormhole next to each other or set up another set of wormholes to get you back to where you started before you left, the wormholes will collapse.

Though if you want to get even more technical, "going back in time" is relative. Depending on your frame of reference, either mouth of the wormhole could be the one that's in the future. Since you can't get to where you started before you left, you can't definitively travel back in time.