Aliens!!!!

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Across
  1. 5. Guys from Mars
  2. 6. We all live in it!
  3. 8. The science guy
  4. 9. Another word for an alien (HINT: E.T.)
  5. 10. Space rocks
Down
  1. 1. Outer _____
  2. 2. Controlled by a crew of aliens!
  3. 3. Woah look it's a flying ______!!
  4. 4. Reach for the _____!
  5. 7. Aliens come from another ______
  6. 8. American agency that does space-related things