Speed of light - time travel??
Did you know that eventually many stars in lots of galaxies will just appear to disappear from the night sky? Of course they will still be there, but because our galaxy is speeding up in one direction and those in another, eventually light from receding galaxies will not actually reach earth due to the increasing speeds we are moving away from each other at. Cool huh?
We can fix it by sending a telescope towards the receding stars at half light speed relative to us and send back the pictures it sees. it will still see the stars we cannot by essentially "standing still" in space as we fly one way and the opposite galaxies fly the other. :)
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