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doit_the_clown doit_the_clown
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In a binary star system, one component is found to have a mass of about 3 solar masses, and the other a mass of about 7 solar masses. The 3-solar-mass star is visible from the Earth, but the 7-solar-mass star is not. Theoretical considerations tell us that the 7-solar-mass star must be
A)   a neutron star.   C)   a white dwarf.
B)   a cool planetary object.   D)   a black hole.
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Discovering the Universe

Discovering the Universe


Edition: 7th
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Only two things are infinite, the universe and human stupidity, and I'm not sure about the former.

Albert Einstein
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papachulopapachulo
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7 years ago
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