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Across
  1. 3. space rocks that range in size from dust grains to small asteroids
  2. 4. A huge rock that has fell on a planet or satellite.
  3. 7. a giant spherical shell surrounding our solar system
  4. 9. rocky, airless remnants left over from the early formation of our solar system about 4.6 billion years ago
Down
  1. 1. Small particles of debris entered earth
  2. 2. Frozen leftovers of dust, rock, and ice.
  3. 5. Big bodies that orbit the star.
  4. 6. The huge star in our sky on earth(I hope on earth)
  5. 8. A satellite of earth.