space

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Across
  1. 3. is orange
  2. 4. have 6 rings
  3. 7. is the principal planet
  4. 8. is too blue
Down
  1. 1. in the space
  2. 2. is green
  3. 5. is a centre
  4. 6. is small
  5. 7. have 5 corners