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Describing Spiral Galaxies Why are spiral galaxies so bright

Describing Spiral Galaxies Why are spiral galaxies so bright
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Describing Spiral Galaxies
Why are spiral galaxies so bright

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User Akfalcon
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2 Answers

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because they contain huge number of stars
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User Jay Whitsitt
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4 votes

Answer:

Spiral galaxies are bright because they contain huge numbers of stars; it is estimated that there are anywhere from 100 to 500 billion stars

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User Elishama
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