Earth and space

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Across
  1. 1. no oxygen
  2. 2. you can use it in a lot of ways
  3. 6. Lots and lots of water
  4. 9. world leading space organisation
  5. 10. huge landmass
  6. 11. is very big and Gassy
Down
  1. 1. bigger and gassier
  2. 3. big chunks of rocks that can vary from very small to very big
  3. 4. random bits and bobs
  4. 5. can vary from very huge to very small
  5. 7. sent out to space to gather data
  6. 8. product of the land or animals