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Curiosities: weigh a star? Just use a planet and its Moon

Washington, USA - The measures come from a young American scientist

How do astronomers weigh a star that's trillions of miles away? In most cases they can't, although they can get a best estimate using computer models of stellar structure. New work by astrophysicist David Kipping says that in special cases, we can weigh a star directly. If the star has a planet, and that planet has a moon, and both of them cross in front of their star, then we can measure their...

AVIONEWS - World Aeronautical Press Agency - 1122001

AVIONEWS - World Aeronautical Press Agency
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