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Which factor does not affect the apparent brightness of a star?

how far away the star is
how hot the star is
how big the star is
how old the star is

Sagot :

Answer:

how old the star is

Explanation:

There are many characteristics that affect the brightness of stars. If two stars are the same temperature, same age, and same distance from the Earth, the larger one will appear brighter. If the temperature, age, or size is different, the one closest to Earth will appear brighter, even if that is the smaller one.