4,255,032,924.41 miles at
485,415.175 miles per hour - that's
0.0007238142685227208 light years
or roughly 181/250,000 of a light year.
So, if you go back in time by one year,
So, if you go back in time by one year,
you would be 4,255,032,924.41 miles away across our galaxy,
the 'Milky Way', which itself is travelling even faster,
on a collision course with the next galaxy over, our nearest neighbour, 'Andromeda'.
In fact, it's a bit of a toss up whether our galaxy will collide with 'Andromeda' first or whether our star, 'Sol', will explode and die...
Now multiply that distance by however many years you fancy travelling back in time...
(travelling forwards in time is different...)
The thing is, everything else, every particle of matter in the Universe will also have to revert back to that earlier state AND coordinate position. Unless matter space and time are able to act independently...
Also, travelling back in time is "Reversion" - reverting back to an earlier state/position...
