- #1
Swimfit
- 38
- 0
My question may be stupid, but as we look out into the universe aren't we seeing into the past? For instance let's say we are looking at a group of stars and they are 3 million light yrs away and moving away from us. Aren't they just moving away from us at that moment? Like the stars on the edge of the universe we really don't know if they are still there. True? Light years are a long time. They could have burned out a long time go and we have seen the result of that. Because the light hasn't gotten here yet. Could you help me with this and explain how we know for sure the universe is still expanding. Because we are always looking into the past. Thanks swimfit