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How big is 南门二(半人马座 α) B?

1,200,000 kilometre!

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南门二(半人马座 α) B

Alpha Centauri B 则是南门二恒星系统中的第二大恒星. 直径大约是一百万公里, 比太阳 略小. 南门二 A 与 B 星非常接近, 因此我们从地球上看会是同一颗星.

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Evren Ölçeði > 南门二(半人马座 α) B

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