universe

123456789101112131415
Across
  1. 1. brightness of a star
  2. 4. are galaxy
  3. 6. time measure in space
  4. 8. electromagnetic radiation
  5. 9. a big explosion
  6. 10. irregular in shapes
  7. 12. ellipsoidal shape
  8. 14. spiral,elliptical and irregular
  9. 15. leftovers of a star
Down
  1. 2. dead star
  2. 3. H-R diagram
  3. 5. a graph that shows relationship between stars
  4. 7. are sun
  5. 11. a large cloud of gas
  6. 13. were the galaxy's and stars are