Space

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Across
  1. 2. Greek name for this means "long-haired star"
  2. 4. Empty space in space, or what Dad asks you to do
  3. 9. Star explosion
  4. 10. Physics studying stars
  5. 12. Collapsed star (2 words)
  6. 16. Milky Way is ours
  7. 17. Decrease
  8. 18. Earthform
Down
  1. 1. Where Earth meets sky
  2. 3. Greek for "universe"
  3. 5. Part of the sun still visible during a solar eclipse
  4. 6. Increase
  5. 7. A bowl-like shape
  6. 8. Non-Earthform
  7. 11. A good place to view space; Palucci
  8. 13. Force of attraction
  9. 14. Orbitting body, not always man-made
  10. 15. Moon-y