Biospheres in Space

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Across
  1. 2. place to conduct research
  2. 3. program; plan
  3. 7. up to now; until now
  4. 9. of or relating to the sun
  5. 13. a scientist who specializes in physics
  6. 14. test; examine
  7. 15. plant house
  8. 17. complicated
  9. 19. large heavenly body revolving around the sun
  10. 20. in the direction of the hands of a clock
  11. 21. think about; recognize
Down
  1. 1. harmony; equal
  2. 4. territories; communities
  3. 5. germs; organisms
  4. 6. ecosystem; atmosphere
  5. 8. garbage; trash
  6. 10. revolves around a planet or moon
  7. 11. imaginative story
  8. 12. make
  9. 16. hazardous; bad
  10. 18. part; component