The space puzzle

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Across
  1. 3. I'm known as "shooting stars"
  2. 4. I'm a natural satellite
  3. 5. I'm a giant ball of plasma
  4. 6. also I'm known as "dirty snowballs"
  5. 7. also known as the 4 outer planets
  6. 9. I reach the earth surface
  7. 11. example of me is little dipper
Down
  1. 1. I'm leftovers in space that's have weird shapes
  2. 2. I'm smaller than a planet but still can orbit
  3. 4. big chunks of rock floating threw space
  4. 8. Im a man who travels in space
  5. 10. example of me is big dipper