earth and space

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Across
  1. 1. the smallest planet in our solar system
  2. 2. earths only natural satellite
  3. 4. the blue planet
  4. 7. it is 4.6 billion years old
  5. 8. has more moons than any planet in our solar system
  6. 9. often called Earth's "twin" due to its similar size and mass
Down
  1. 1. know as the red planet
  2. 3. known as the ice giant
  3. 5. has 95 moons
  4. 6. you hide it in your pants