Inner Planets

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Across
  1. 2. Earth's air is made up of Nitrogen and ____
  2. 4. Sometimes called Earth's twin
  3. 5. Mars has two moons, Deimos and ______
  4. 8. Closest to the Sun
  5. 10. Another word for rocky
Down
  1. 1. Mercury was the _____ god in Roman mythology
  2. 3. Belt A bunch of large rocky chunks
  3. 6. The planet you live on
  4. 7. Venus was named after the goddess of ____
  5. 9. Known as the red planet