Mercury's Surface

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Across
  1. 3. molten rock under earth's surface
  2. 5. a lump of metal or rock from space that crashes into earth
  3. 6. force applied evenly over area
Down
  1. 1. one of the hardest substances on earth and rarest gems
  2. 2. large object/rock that orbits star in space
  3. 4. smallest planet in solar system
  4. 7. star at center of our solar system