The number of stars in our universe

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送交者: 过客1234 于 2008-02-27, 13:15:21:

回答: Why is the sky dark at night (for kids) 由 过客1234 于 2008-02-27, 13:04:46:

http://www.space.com/scienceastronomy/star_count_030722.html

http://imagine.gsfc.nasa.gov/docs/ask_astro/answers/970115.html



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