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5 October, 11:03

Describing Spiral Galaxies

Why are spiral galaxies so bright

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Answers (2)
  1. 5 October, 12:05
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    Spiral galaxies are bright because they contain huge numbers of stars; it is estimated that there are anywhere from 100 to 500 billion stars
  2. 5 October, 14:38
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    Because they contain huge number of stars
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