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拎不清 發表於 2012-2-27 12:43 
大爆炸理論是在一些假設下的推論,不一定對。爆炸點有多大?物理學家不知道。這就是漏洞。
Scientists do not 'believe in' theories. They gather evidence for them and build them up with experiment and observation or reject them if there be contradictory evidence. The Big Bang Theory is accepted due to the presence of much evidence, such as:
Arno Penzias and Robert Wilson's telescope's hissing, a remnant of radiation from a massively hot early Universe (see Bill Bryson's account in A Short History of Nearly Everything). The static on a television is also a remnant presumably of a hot early state to the Universe.
The red-shift of galaxies, implying expansion of the Universe, which extrapolated backwards and combined with General Relativity implies a dense, space-time warped, hot, small beginning to the Universe.
The darkness of the night sky (see Marcus Chown's Quantum Theory Cannot Hurt You for an account) which is a darkness, not a bright glow which would occur if light had been pouring from all corners of the Universe towards Earth for infinite time (more of a hint at a finite age to the Universe rather than a direct inference of a Big Bang).
The ratio of hydrogen to helium in the Universe.
Read more: http://wiki.answers.com/Q/Why_do ... heory#ixzz1ncGsXJkM |
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