Posted: Nov 13, 2010 9:28 pm
Ironclad wrote:hackenslash wrote:For example, a round trip to Andromeda at a snip below lightspeed would take only about 50 years from the frame of the traveller, while outside that frame, 6 million years would pass.
Is it (remotely) possible that while I am rocketing up Andromeda way at close to light-speed the scientists of Earth crack the Alcubierre Metric, only for me to arrive back in my home galaxy and find it over populated?
Yes, it's possible, even without an Alcubierre drive. I don't even personally think an Alcubierre drive is even possible, but no sense giving up trying as long as it's not demonstrated to be wrong. Yet it's not needed if the speed and departure times are right.