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10 August, 13:48

What is the brightness of a star

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  1. 10 August, 15:10
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    The brightness of a star depends on its composition and how far it is from the planet. Astronomers define star brightness in terms of apparent magnitude (how bright the star appears from Earth) and absolute magnitude (how bright the star appears at a standard distance of 32.6 light years, or 10 parsecs)
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