2007-12-17 14:37:56 · 7 answers · asked by ♥*~*punk 4 eva*~*♥ 1 in Science & Mathematics ➔ Astronomy & Space
The Cosmological Microwave Background Radiation.
http://en.wikipedia.org/wiki/Cosmic_microwave_background_radiation
The theory uses the Primeval Atom hypothesis whereby the universe would have started off very hot and dense. It has been expanding ever since; the expansion reduces the overall energy density, thereby reducing the temperature.
Approximately 400,000 years after the big bang, the teperatre of the universe had dropped to 3000 K.
At 3000 degrees K, neutral atoms can exist. Before that (according to the theory) the universe would have been hotter: atoms cannot hold on to their electrons which are free to roam and interfere with light photons.
After than, electrons are bound to atoms and the universe becomes transparent.
Because of the expansion that has been going on ever since, the light that was emitted when the unverse became transparent has been shifted in frequency so that we receive it now in the frequeency range of "microwaves" (hence the name).
The other popular theory (Steady State) could not explain the Cosmological Microwave Background.
2007-12-17 14:47:45 · answer #1 · answered by Raymond 7 · 2⤊ 0⤋
1 Expansion of the universe predicted by Einstein's mathematics and detected later. 2. Cosmic microwave radiation background 3 Zach being a dimwidt. Seems to upset his religious sensibilities. I see he thinks the Earth formed in the big bang. Sure sign of a creationist dupe.
2007-12-18 05:16:18 · answer #2 · answered by Anonymous · 0⤊ 1⤋
The three observational pillars of big-bang cosmology are:
(1) the cosmic microwave background
(2) the observed expansion of the universe
(3) the observed relative abundance of H and He
2007-12-18 00:05:03 · answer #3 · answered by jgoulden 7 · 2⤊ 0⤋
The left-over heat energy from the Big Bang event itself, called the cosmic microwave background radiation (CMBR)
Secondly, the expansion of the universe.
2007-12-17 22:58:28 · answer #4 · answered by Chug-a-Lug 7 · 3⤊ 0⤋
The cosmic background radiation
2007-12-18 01:56:38 · answer #5 · answered by Asker 6 · 0⤊ 0⤋
hey, Zach, chill pill.
Astronomers have a theory, sure... what you got?
a book. Hell, kid, I WRITE books... what you want the next one to say? How about the Earth was created by clods of dirt falling off God's weewee? (wait, thats been done)
face it. Big Bang? Not going anywhere.
2007-12-18 00:27:26 · answer #6 · answered by Faesson 7 · 1⤊ 1⤋
There is none. You cant start an explosion of very VERY dense matter out of nothing. Nothing wouldve started it or set it off. There is no way the perfect earth could have been created by ACCIDENT. There is no way. You can create all your THEORIES about the big bang, but most scientists KNOW that there is not enough evidence and there will never be enough, to make the big bang a POSSIBLE outcome..... im not saying that scientists dont believe this because most do.... there is just no proof.
notice the word THEORY in big bang theory. Theory is an IDEA proposed that has not been scientifically proven
big bang does not exist
2007-12-17 23:56:58 · answer #7 · answered by Anonymous · 0⤊ 8⤋