Astronomy is FUN

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Across
  1. 4. When the moon isn't lit at all
  2. 5. the distance light travels in a year
  3. 6. When the moon is completely lit
  4. 8. The theory that the Earth is in the middle of the Solar System
  5. 12. The theory that the Sun is in the middle of the Solar System
  6. 13. a ball of rock and ice that melts as it circles the sun
  7. 14. The study of Space
  8. 15. The closest star to Earth
  9. 16. about the same size as Earth
  10. 17. The planet we live on
Down
  1. 1. The theory of how the universe began
  2. 2. The first phase of the moon
  3. 3. The distance from Earth to the Sun
  4. 4. Proved the Big Bang Theory correct
  5. 7. When a meteoroid enters Earth's atmosphere
  6. 9. A meteor that has hit Earth
  7. 10. The galaxy that we live in
  8. 11. What do you use to look at distant objects