2004/11/03 | 宇宙膨胀[Expansion of the Universe]
类别(Ω〖物理〗) | 评论(0) | 阅读(33) | 发表于 15:48
The background radiation from the Big Bang explosion can be detected at a wavelength of 1 mm, corresponding to a blackbody temperature of 2.7 K. This is called the cosmic background radiation.
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