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本帖最後由 嘁哩喀喳 於 2011-3-7 13:40 編輯
自由之靈 發表於 2011-3-7 13:32 
回復 嘁哩喀喳 114樓 的帖子
宇宙是生命的載體, 「皮之不存，毛之焉附？」
科學家們自己都搞不清楚的事情，貌似你已經搞清楚了？
妹妹啊！這不是科學的態度！
知道的就是知道的，不知道的就是不知道的。
搞得清楚的就搞清楚了再說，搞不清楚就不要自以為自己搞清楚了。同樣再摘錄一段：
While the Big Bang model is well established in cosmology, it is likely to be refined in the future. Little is known about the earliest moments of the Universe's history. The Penrose–Hawking singularity theorems require the existence of a singularity at the beginning of cosmic time. However, these theorems assume that general relativity is correct, but general relativity must break down before the Universe reaches the Planck temperature, and a correct treatment of quantum gravity may avoid the singularity.[62]
Some proposals, each of which entails untested hypotheses, are:
models including the Hartle–Hawking no-boundary condition in which the whole of space-time is finite; the Big Bang does represent the limit of time, but without the need for a singularity.[63]
brane cosmology models[64] in which inflation is due to the movement of branes in string theory; the pre-big bang model; the ekpyrotic model, in which the Big Bang is the result of a collision between branes; and the cyclic model, a variant of the ekpyrotic model in which collisions occur periodically. In the latter model, the Big Bang was preceded by a Big Crunch and the Universe endlessly cycles from one process to the other.[65][66][67]
chaotic inflation, in which universal inflation ends locally here and there in a random fashion, each end-point leading to a bubble universe expanding from its own big bang.[68][69][70]
Proposals in the last two categories see the Big Bang as an event in a much larger and older Universe, or multiverse, and not the literal beginning. |
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