Planets

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Across
  1. 4. Made up of gasses that surround it
  2. 5. Mercury, Venus, Earth, Mars
  3. 6. To move repeatedly around
  4. 7. The planet that is approximately 465 degrees Celcius
  5. 8. Like Earth in some ways
  6. 9. What Mars's atmosphere is primarily made of
Down
  1. 1. Jupiter, Saturn, Uranus, Neptune
  2. 2. What Earth is primarily made of
  3. 3. A celestial object that orbits a planet