Astronomy

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Across
  1. 2. a body that orbits another of greater mass
  2. 4. dark areas on the moon
  3. 6. a small rocky body traveling through space
  4. 10. a piece of a meteoroid that impacts the Earth
  5. 12. the only know moon to have its own magnetic field
  6. 13. latin for moon
  7. 15. Galilean moon that is densely cratered
  8. 16. small body of rock, metal and ice
  9. 18. the largest moon of Saturn
  10. 20. the moon has lots of these depressions
Down
  1. 1. a ring of icy bodies beyond Neptune's orbit
  2. 3. a bright light created by a meteoroid burning up in Earth's atmosphere
  3. 5. oort cloud
  4. 6. a natural satellite
  5. 7. rock fragments fused together from impacts
  6. 8. a layer of dust and rock that covers lunar surface
  7. 9. long deep channels in the maria
  8. 11. one of the Galilean moons with a rock core and liquid water under its icy surface
  9. 14. fragments of rock located in a band between the orbits of Mars and Jupiter
  10. 17. igneous rock that make up the maria
  11. 19. volcanically active moon orbiting Jupiter