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Originally posted by ZeroDeep
But science doesn't claim that the universe is infinitely large. It claims that its a finite size that is expanding. That expansion might ultimately be limitless, but thats not the same thing as saying 'the universe is infinite', especially not if, as the thread starter was saying, 'if its infinite, then there are an infinite number of stars, planets, etc'.
Ah, I sort of was regretting saying my original statement, but decided that, if wrong, some would correct me. Thanks.
So, the Universe is not Infinite, but is exanding to an extent unkown ? It is not eternal though, for the universe always did not exist, right ?
Originally posted by s_e_m00re
The second outcome could be there is a "big Crunch" that is a complement to the big bang. I don't have the research in front of me but I believe the idea behind the second theory is similar to that of a black hole, where the gravityis so great that it overtakes all the mass. I may have mixed up the last part though.
# Universe is 13.7 billion years old, with a margin of error of close to 1%.
# First stars ignited 200 million years after the Big Bang.
# Light in WMAP picture is from 379,000 years after the Big Bang.
# Content of the Universe:
* 4% Atoms, 23% Cold Dark Matter, 73% Dark Energy.
* The data places new constraints on the Dark Energy. It seems more like a "cosmological constant" than a negative-pressure energy field called "quintessence". But quintessence is not ruled out.
* Fast moving neutrinos do not play any major role in the evolution of structure in the universe. They would have prevented the early clumping of gas in the universe, delaying the emergence of the first stars, in conflict with the new WMAP data.
# Expansion rate (Hubble constant) value: Ho= 71 (km/sec)/Mpc (with a margin of error of about 5%)
# New evidence for Inflation (in polarized signal)
# For the theory that fits our data, the Universe will expand forever. (The nature of the dark energy is still a mystery. If it changes with time, or if other unknown and unexpected things happen in the universe, this conclusion could change.)