Space Vocabulary

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Across
  1. 3. , A Celestial body orbiting around a star
  2. 6. Years , A unit of length in astronomy equal to the distance that light travels in one year
  3. 8. , The Brightness of a Celestial Object
  4. 11. , Was Created By the Big Bang
Down
  1. 1. , Billions Of Stars Held Together By Gravity
  2. 2. A measurement of how hot or cool an object is
  3. 4. System , A sun and planets held together by attraction and revolve around it
  4. 5. Bang Theory, An explosion that created the universe
  5. 7. , Any star at the middle of a solar system
  6. 9. The earth's natural satellite
  7. 10. , a fixed luminous point in the night sky