Andromeda bigger than initially thought

[Provost Harrison]

Originally posted by CyberShy


I see that you finally agree that your side is the dark side
acknowledging that is the first step to turning over to the good side

Nope, Dark and proud

[MichaeltheGreat]

Originally posted by Vince278


Not so fast. I heard they determined the current age (14 billion years) by measuring how long it took light to travel from the edge of observable space. If that is true then shouldn't the current age be 28 billion years? That is, the time required for the edge to expand to 14 billion LYs away plus the time it took for the light to travel from that far away?

Nope. General relativity. c is always c.

[Vince278]

Wouldn't it stand to reason that the universe expanded even more in the 14 billion years it took for light to travel from the observable edge?

[Geronimo]

Originally posted by Vince278
Wouldn't it stand to reason that the universe expanded even more in the 14 billion years it took for light to travel from the observable edge?

So the the place we are looking at 14 billion light years away was 14 billion light years away when the light began it's journey but is god only knows how far away now due to 14 billion years of expansion since then?

I didn't think it worked that way.

[Vince278]

Originally posted by Geronimo
So the the place we are looking at 14 billion light years away was 14 billion light years away when the light began it's journey but is god only knows how far away now due to 14 billion years of expansion since then?

I didn't think it worked that way.

Correct, but something must be wrong with my logic if the current age is correct.