Calgarypuck Forums - The Unofficial Calgary Flames Fan Community - View Single Post - What's the furthest object you've ever seen? How about 7.5 billion light years?

worth · 03-20-2008, 03:10 PM

Yeah you're right, but I think there's a net loss here. If the explosion occurs at 6B LY away and expansion takes place in between making it in reality 7.5B LY away at the point of contact with the earth we have to look at the fact that the photons are also traveling out at the same time. So wouldn't it be Expansion of the Universe - Speed of light (since the photons would be traveling out while space is expanding) = distance away from earth (when you add in the original starating position).

I don't think any of that made sense...

03-20-2008, 03:10 PM	#17
worth Franchise Player Join Date: Jun 2004 Location: Vancouver Exp:	Yeah you're right, but I think there's a net loss here. If the explosion occurs at 6B LY away and expansion takes place in between making it in reality 7.5B LY away at the point of contact with the earth we have to look at the fact that the photons are also traveling out at the same time. So wouldn't it be Expansion of the Universe - Speed of light (since the photons would be traveling out while space is expanding) = distance away from earth (when you add in the original starating position). I don't think any of that made sense...