Since looking at galaxies millions of light years mean that we are looking at those galaxies when they were millions of light years old since the light hasn't reached us yet, doesn't it mean that even if some life exists in those galaxies which lets say started about 2000 light years ago but that galaxy is actually 6000 light years away from us.
So since its 6000 light years away from us we would be looking at the galaxy 6000 light years into the past and until and unless we actually reach that galaxy there is no way to find out if life exists in any of them.
Therefore my question is could we actually ever find life in another galaxy? Since we would be looking in the past and not whats happening there rigbt now which could involve another race living there?
Galaxies and time?
Details:
Responses (1)
The nearest galaxy (dwarf) is Sagittaurius at 81,000 ly, so it would take about 1650 human generations at light speed to get there. All of recorded history is only 240 generations (estimated at 50 years per generation).
But we can't even detect life right here on Earth unless it bites us. We have a rock found at the south pole. We think it came from Mars. Scientists can't tell if it's a corpse, a fossilized turd, or just a rock.