Astronomy

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Across
  1. 2. When the first humans landed on the moon
  2. 5. A pattern of stars
  3. 7. red planet 4th from the sun
  4. 10. A solid body orbiting the Sun
  5. 12. A rock or a solid piece of matter entering earth's atmosphere
  6. 13. The first artificial satelight was launched into space
  7. 14. Blue planet 8th from the sun
  8. 16. Biggest planet 5th planet from the sun
  9. 18. First man-controlled spacecraft
  10. 20. Second full moon that happens in a month
  11. 21. A collection of stars and planets
Down
  1. 1. First man-controlled spacecraft failure
  2. 3. Shuttle that exploded
  3. 4. A ball of ice and rocks
  4. 6. When a planet or moon shades the sun
  5. 8. A big ball of gas
  6. 9. Least explored, Ice giant
  7. 11. The study of everything beyond earths atmosphere
  8. 15. The farthest dwarf planet in our solar system
  9. 17. Earths only natural satelight
  10. 19. A concentration of mass so dense that nothing can escape