The Inner Solar System

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Across
  1. 3. In 2021 NASA flew the first _______ on Mars
  2. 5. the red planet
  3. 7. Venus rotates _______, opposite of most other planets
  4. 8. Mars has the largest ______ in the solar system
  5. 10. closest planet to the sun
  6. 11. the only dwarf planet in the inner solar system
  7. 12. more than 10,000 of them are in our solar system
  8. 15. Venus is covered in thick _______
  9. 16. The planets are named after ______ gods/goddesses
Down
  1. 1. planet that currently has liquid water
  2. 2. Mercury and Venus have no ______ while Earth and Mars do
  3. 4. hottest planet in the solar system
  4. 6. Mercury has a very thin ________, making the temperatures vary a lot
  5. 7. Mercury has many _______, making it look like the moon
  6. 9. The inner planets are _____ because of their closeness to the sun
  7. 13. Because of Mars' tilt, this planet can experience ________ like we do on Earth
  8. 14. On Venus, the _____ is longer than the year