I wish to understand the theoretical concept of time travel whilst going FTL.
I can't wrap my head around it.
Can you draw me a picture, Veeky Forums?
I wish to understand the theoretical concept of time travel whilst going FTL
Jason Barnes
Blake Parker
Chase Parker
I guess I was too vague, I will give a specific example. If this doesn't work out I will just have to quell my hunger for meaningless trivia.
Ok, it's March 17th 2018, you've figured out the warp drive, you're sitting in your ship in Earth's orbit, and you plot the course for an arbitrary star system 100 light years away.
You hit the gas and a second later you're at your destination.
Do you arrive at March 17th 2118, or March 17th 1918?
Blake Gomez
Unanswerable/undefined. You can't compare "absolute time" in distant locations.
Cameron Green
fair enough I suppose
so you hit the gas again and return to earth
what year is it?
Cooper Myers
Besides relativity slowing down your relative MOTION at high speeds or near dense objects, no destination based time travel exists
Anthony Howard
Think about it this way: once you arrive at your destination you look back at Earth with an ultra powerful telescope. What do you see?
You'd see the Earth as it appeared in 1918, since the light from that time is just now reaching the destination system.
Wait around for however many years is necessary and you'd see yourself be born, grow up, and then exactly 100 years after you arrived you'd see yourself hop in your warp drive and hit the gas pedal.
But if you just stayed at the destination long enough to look through the telescope and then went right back, the year wouldn't be 1918, it would 2018.
So based on that thought experiment, what year do you think it would be when you arrived at the destination system?
Elijah Ortiz
Why do they say that FTL or even FTC would violate causality then?
Parker Foster
So it's just reference frames? Beating maximum speed for information, not actually going into the future or past?
Juan Bennett
Because arriving at an arbitrary distance while experiencing an arbitrary amount of time (anything greater than 0) doesn't require moving faster than light. The faster you move the less time you experience.