xgenevievianx xgenevievianx

16-11-2016
Chemistry

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Please explain how we judge the brightness of stars.

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SoBastic SoBastic

16-11-2016

astronomers can measure it by way of luminosity which is the power of a star or the amount of energy (light) the star admits from its surface. they also measure the brightness of a start as if it were to appear 32.6 light years from Earth

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