Universe

12345678910111213141516171819202122232425
Across
  1. 2. a moon in our solar system larger than mercury
  2. 5. the temperature can go up to 482' celsius
  3. 6. the largest dwarf planet in our solar system
  4. 7. the closest star to our solar system
  5. 10. a kind of black hole that is emitting high energy in the form of a single ray
  6. 14. the closest solar system to ours
  7. 16. the belt of asteroids at the edge of our solar system
  8. 19. a cloud surrounding our solar system
  9. 21. a very dense celestial object formed when a star dies and has a singularity
  10. 22. the largest unit of measurement in space
  11. 23. the explosion which led to the formation of our solar system
  12. 24. the largest black hole
  13. 25. the only known planet to have life
Down
  1. 1. contains 99.98% mass of our solar system
  2. 2. the force which keeps everything together
  3. 3. the first satellite ever to cross the Solar System
  4. 4. the largest planet in our solar system
  5. 8. a star that is extremely dense and made when a star dies
  6. 9. the largest star
  7. 11. the closest galaxy to us
  8. 12. a kind of a neutron star that is emitting high energy in the form of a single ray and rotates really fast
  9. 13. largest planet discovered to have rings
  10. 15. the galaxy in which we live
  11. 17. a planet that is not in our solar system
  12. 18. the brightest explosion in the universe
  13. 20. the coldest planet in our solar system