MadSci Network: Astronomy
Query:

Subject: the edge of the universe and after

Date: Fri Jun 4 01:20:15 2004
Posted by Jason
Grade level: grad (science) School: No school entered.
City: Wakefield State/Province: Yorkshire Country: UK
Area of science: Astronomy
ID: 1086330015.As
Message:

Hi,
I've asked numerous questions on this website and I hope it's making me 
understand the universe a little bit more each time.
As I understand it, the universe is expanding (accelerating) and as it does so, 
the space within is being stretched. Does this mean that all matter within this 
expanding universe is gradually being stretched? If this is the case, will all 
atoms of matter ultimately be so stretched that they change to pure radiation 
such as light?
If the universe is expanding slower than the speed of light (which I am led to 
believe), then light photons will be the first objects to reach the edge of the 
expanded universe/line between the universe and nothingness. What happens to 
the light at this point? Does it bounce back (where elase can it go) towards 
the origin of the big bang and will this ultimately be the fate of all 
radiation?
 Finally; light has no rest mass only mass due to it’s velocity, does this mean 
light creates gravity and therefore bends space-time?

Thanks for your time
 
Jason Bloomfield



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