Our Universe

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Across
  1. 4. very first Indian in space
  2. 6. an area between Mars and Jupiter where most asteroids are found
  3. 9. a giant ball of gas that radiates
  4. 10. the lightest element that composes 75 percent of the sun
  5. 11. path of an object moving around another object
  6. 13. number of planets in solar system
  7. 16. a satellite of the earth
  8. 18. first man on the moon
  9. 19. large body that orbits a star
  10. 22. the gravitational pull on planetary objects from nearby planets and moons
  11. 23. a physical force of nature that causes two objects to attack each other
  12. 24. visible stars in a pattern
Down
  1. 1. electromagnetic radiation that the earths atmosphere blocks
  2. 2. the red planet
  3. 3. name of first animal that went into space
  4. 5. the galaxy we live in
  5. 7. the distance travelled by light in a year
  6. 8. the study of space
  7. 12. instrument used to see large objects in place
  8. 14. a small particle of rock that burns in earths atmosphere
  9. 15. something that doesn’t originate on earth
  10. 17. explosion that lead to creation of the universe
  11. 20. the largest planet
  12. 21. a large system of 100 billion stars