Physics, 13.01.2020 22:31, halobry2003

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an astronomer sees two stars in the sky. both stars are equally far from earth, but the first star is brighter than the second star. which of the following is a valid conclusion about the first star?

it is larger than the second star.
it is smaller than the second star.
it is older than the second star.
it is younger than the second star.

i think it is c but i think i read something about younger stars being brighter.

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