Problem with time travel is that the planet moves at a considerable speed, so you need to catch up or sit in empty space where earth is going to be in x years..
Seriously.... when you are simply standing in one spot on the planet and not trying to move, does the planet suddenly move away from under you?
So, why would it do so if you were in a time machine that didn't move itself through space either?
Yes, its obvious that travelling through time means travelling through space, but either way the earth is just going to carry you along with it, so as far as the immediate environment is concerned, you don't actually seem to move at all.
If you travel back in time by six months and don't change position or velocity the earth will be about 300000 miles away on the othe side of the sun
That's only if the solar system stayed still and our galaxy didn't move. I really hate this kind of stupid science fiction--even if it's dressed up as a paper by a student who's locked in during the pandemic--because it never accounts for why a society which could teleport to position x,y,z, at time (whatever) wouldn't have already been dramatically changed by the ability to teleport to position x,y,x. Really, what would that look like? What happened if that ability arose NOW? Would it make a difference dep
As Einstein demonstrated, there is no position x,y,z. Everything is relative. The universe does not have an 'origin'. If you define an object's position in terms of x,y,z coordinates, you are implicitly defining another location as 0,0,0 and describing the object's location relative to that. Problem is, that location is moving as well relative to something else. This really is the crux of the Theory of Relativity.
Enjoy outer space (Score:2)
Problem with time travel is that the planet moves at a considerable speed, so you need to catch up or sit in empty space where earth is going to be in x years..
Re: (Score:2)
Why?
Seriously.... when you are simply standing in one spot on the planet and not trying to move, does the planet suddenly move away from under you?
So, why would it do so if you were in a time machine that didn't move itself through space either?
Yes, its obvious that travelling through time means travelling through space, but either way the earth is just going to carry you along with it, so as far as the immediate environment is concerned, you don't actually seem to move at all.
Re: Enjoy outer space (Score:5, Interesting)
Re: (Score:2)
If you travel back in time by six months and don't change position or velocity the earth will be about 300000 miles away on the othe side of the sun
That's only if the solar system stayed still and our galaxy didn't move. I really hate this kind of stupid science fiction--even if it's dressed up as a paper by a student who's locked in during the pandemic--because it never accounts for why a society which could teleport to position x,y,z, at time (whatever) wouldn't have already been dramatically changed by the ability to teleport to position x,y,x. Really, what would that look like? What happened if that ability arose NOW? Would it make a difference dep
Re: Enjoy outer space (Score:2)