Space

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Across
  1. 3. What planet is closest to the sun
  2. 4. What is the largest space station
  3. 7. When did pluto stop being a planet
  4. 11. What is the biggest planet
  5. 12. How many planets are there
  6. 13. The planet that we live on
  7. 15. The hottest planet
  8. 17. Does sound travel in space
  9. 18. Coldest place in the universe is the __ nebula
  10. 19. Big hot star
Down
  1. 1. The first man in space was ____ Gagarin
  2. 2. The first man walk on the moon was Neil
  3. 3. What is the smallest planet in our solar system
  4. 5. What was the first animal in space
  5. 6. What planet collided with earth to make a moon
  6. 8. What is the sixth planet in our solar system
  7. 9. Does every black hole contain a singularity
  8. 10. What was the first american space station
  9. 14. What percent of the universe is dark matter
  10. 16. The moons ____ has effect on our tides