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mcarans
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If a space ship was able to travel faster than our universe is expanding and thus reach the edge, what would happen to the ship?
Congress holding UFO hearing Tuesday morning at 9 AM EDT: Watch it live here!
If you were to jettison yourself out to a galaxy thirteen billion light years away, you would not find yourself in a baby galaxy at the edge of the universe. You would find yourself in a 13 billion year old galaxy in the center of the universe.planetling":1myofccq said:...if we were somehow able to jettison out 13+ billion years toward the beginning of the universe...
It seems likely that the universe extended beyond our visible universe though there's no way to prove it (though some have hinted at such a proof). However due to the accelerating expansion of the universe, portions of which are exceeding c[sub]0[/sub] recessional velocity, we'll actually see less of the universe as time goes by. It's thought that if enough time goes by we'll eventually only be able to see our local cluster of galaxies.captdude":244lc6f4 said:So I guess my question is, are you implying that the size of the universe extends beyond our bubble of light and that as time goes by more of it will be revealed?
mcarans":2733e9bu said:If a space ship was able to travel faster than our universe is expanding and thus reach the edge, what would happen to the ship?
SpeedFreek":zgwh12xs said:Our observable "light bubble" measures 92 billion light-years across.
We detect Cosmic Background Radiation coming at us from all directions. So, if we consider the CBR that comes from opposite directions, we are detecting radiation emitted from regions of the universe that are now 92 billion light-years apart.
Please read the PDF article linked in my signature!
Opps, this doesn't make sense. The part of the universe that is not observable is not observable because there is no light from that distance reaching us. So by definition, no radiation from the non-observable part of the universe could reach earth.nec208":2fobulee said:The detecting radiation emitted not from the observable universe may prove the universe is flat and not round and may disprove other universe we cannot see or get to.
I think it's understood that the was no "light" (that we could "see" today) at the beginning of the universe. Any photons would be absorbed before they could travel freely. It wasn't until about 400,000 yrs after the BB that they could do so. After the recombination period the universe was dark until stars ignited ... about 200 Myrs later (I think).Gravity_Ray":thnb0157 said:I am not sure if its even provable that there was light right from the begining of the universe! It took some amount of time (probably a very long time in human terms) for stars to form and emit light. So the universe is larger than the observable part of the universe.
oops I thought he was saying we where getting radiation coming from empty space no stars,gas or planets so on and was a mystery to scientist.origin":1er84b8n said:Opps, this doesn't make sense. The part of the universe that is not observable is not observable because there is no light from that distance reaching us. So by definition, no radiation from the non-observable part of the universe could reach earth.nec208":1er84b8n said:The detecting radiation emitted not from the observable universe may prove the universe is flat and not round and may disprove other universe we cannot see or get to.