Universe

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Across
  1. 4. the largest dwarf planet in our solar system
  2. 7. the closest solar system to ours
  3. 8. the temperature can go up to 482' celsius
  4. 10. a star that is extremely dense and made up of neutrons
  5. 12. the closest galaxy to us
  6. 13. largest planet discovered to have rings
  7. 14. the brightest explosion in the universe
  8. 15. the largest star
  9. 19. the closest star to our solar system
  10. 20. a very dense celestial object formed when a star dies and has a singularity
  11. 22. a kind of black hole that is emitting high energy in the form of a single ray
  12. 23. the explosion which led to the formation of our
  13. 24. a cloud surrounding our solar system
Down
  1. 1. a planet that is not in our solar system
  2. 2. the first satellite ever to cross the Solar System
  3. 3. the largest planet in our solar system
  4. 5. the largest black hole
  5. 6. the belt of asteroids at the edge of our solar system
  6. 9. contains 99.98% mass of our solar system
  7. 11. the coldest planet in our solar system
  8. 14. a moon in our solar system larger than mercury
  9. 16. the galaxy in which we live
  10. 17. the only known planet to have life
  11. 18. the largest unit of measurement in space
  12. 21. the force which keeps everything together