The moon is made....

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Across
  1. 6. A space rock that can contain metals like gold
  2. 7. A precious metal found in asteroids
  3. 8. space The space between galaxies, almost empty
  4. 10. A natural satellite of Earth
Down
  1. 1. A type of rock found on Mars
  2. 2. A moon of Saturn with gases like methane
  3. 3. dwarf star A small, dense star where diamonds can form
  4. 4. A gas found on Titan
  5. 5. A material found on Mars
  6. 9. A space object made of ice, gas, and rock