Space Exploration

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Across
  1. 3. Celestial body with a tail.
  2. 6. Extraterrestrial life form.
  3. 7. Planet known for its rings.
  4. 8. Vehicle for space travel.
  5. 9. NASA program that landed humans on the Moon.
  6. 11. Known as the Red Planet.
  7. 13. Cloud of gas and dust in space.
  8. 14. Second planet from the Sun.
Down
  1. 1. Earth's natural satellite.
  2. 2. Space rock that enters Earth's atmosphere.
  3. 4. Path of a body around a planet.
  4. 5. Formerly classified as a planet.
  5. 7. They light up the night sky.
  6. 10. Large system of stars.
  7. 12. Earth's closest planetary neighbor.