Time travel requires space travel as well, given that the planet is ever moving relative to the Sun.
The Sun is ever moving relative to the galaxy center.
The galaxy is ever moving relative to... other galaxies.... relative to the absolute universal spatial coordinates, if there is such a thing.
So... how fast and in which direction is a point on the surface of the Earth moving, relative to the absolute space coordinate system?
You're not too eager to time travel and find yourself a solar system away from the Earth in that particular time instance, are you?
The Sun is ever moving relative to the galaxy center.
The galaxy is ever moving relative to... other galaxies.... relative to the absolute universal spatial coordinates, if there is such a thing.
So... how fast and in which direction is a point on the surface of the Earth moving, relative to the absolute space coordinate system?
You're not too eager to time travel and find yourself a solar system away from the Earth in that particular time instance, are you?
