Well I understand that this really sounds impossible to humans, but how would we know it's not possible for a far more advanced alien civilization to master this techinique. I mean there are billions of unknown galaxies out there and I certainly believe we are not the most advanced. :) Anyways...
Okay, this question may sound weird and confusing, but I'll try to make it clear. It is something I thought of while studying relativety and time. So, say an alien spaceship is traveling at a speed of 100km/s towards us, which is 3 light years away. So, according to the speed of light, it needs...