Question

WHAT TWO FACTORS DETERMINE HOW BRIGHT A STAR LOOKS FROM EARTH

Answer 1

However, the brightness of a star depends on its composition and how far it is from the planet. Astronomers define star brightness in terms ofapparent 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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Answer 2

Size, temperature

Explanation:

• The energy emitted by the star is called as the luminosity of the star.
• The apparent brightness is the perspective of appearance of star from the earth.
• The apparent brightness depends upon the luminosity of the star.
• The luminosity of the star depends upon the size of the star the large star expect to have large surface area which is likely to emit more light.
• The temperature also influence the how star appears as there are many layers of gases in the atmosphere from which the light of the star comes through which can affect the perspective of how big or small the star looks.

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