Astronomers measure the mass of a star—thanks to an old tip from Einstein
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Relativistic bending of light helps peg this white dwarf star at 2/3 the mass of the sun.
Read more - http://scim.ag/2sg2Irm
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Read more - http://scim.ag/2sg2Irm
Learn more - http://scim.ag/2qWT3C9
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