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出典:Wikipedia
出典:『Wikipedia』 (2011/01/04 19:09 UTC 版)
AFGL 2591 is a young, massive star in the constellation Cygnus. It is more than 3,000 light-years from Earth, at least 10 times the size of the Sun, and over 20,000 times as bright. It is estimated to be about one million years old, about 1/5000th of the Sun's age.
AFGL 2591