space

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Across
  1. 3. some people say this planet is made of cheese!
  2. 4. these can be seen at night
  3. 6. if you look through one you can see the stars clearly
  4. 8. the planet we live on
Down
  1. 1. vehicle used in space travel
  2. 2. person who explores space and unknown planets
  3. 5. star that provides heat and light
  4. 7. planet of war