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Chandra Director's Office

Cambridge, 美国 中的 研究机构
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Chandra X-ray Center Director's Office. Chandra is operated for NASA by SAO. We release information geared towards the scientific …

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Could you please tell me which is more common in our Galaxy: white dwarfs or black holes? Why?
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I would like to know what exactly is in a black hole. Does anyone know? Is there a way to get a satellite near one to bring back images...
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