stars

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Across
  1. 3. sun and all objects that are gravitationally bound sun
  2. 5. bright objects of gas in the sky
  3. 7. Jupiter Neptune, Saturn, Uranus make this up
  4. 11. astronomical number very large number
  5. 12. the biggest & largest object in the solar system
  6. 14. Mercury,Venus, Earth, Mars make this up
  7. 15. the distance light travels through space
Down
  1. 1. a pattern of stars
  2. 2. the time it takes a planet to orbit around the sun
  3. 4. Egyptian astronomer
  4. 6. astronomical unit
  5. 8. spinning of a planet that equals one day
  6. 9. object in orbit
  7. 10. the galaxy we live
  8. 13. the planet we live