Apparent Brightness and Relative Distance

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Across
  1. 3. only star in our solar system
  2. 6. supergiant star
Down
  1. 1. Some stars shine more brightly than others because of their____.
  2. 2. groups of stars are called _____.
  3. 4. what stars are made of
  4. 5. The sun is the brightest star in our sky because it is _____ to us.