Galaxies

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Across
  1. 3. a type of galaxy where the shape is not even, neither spiral nor elliptical
  2. 5. have found
  3. 6. 1000
  4. 8. intense activity in a galaxy involving the formation of stars
  5. 10. as stated by
  6. 13. shape-another way of describing a spiral galaxy
  7. 14. belonging to the past
  8. 15. the force of attraction between bodies that have mass eg Earth & Moon
Down
  1. 1. a galaxy in which the stars and gas clouds are concentrated mainly in the spiral arms
  2. 2. the length of space between two places
  3. 4. a type of galaxy where the stars are close together so the galaxy looks like one giant star
  4. 7. everything that exists
  5. 9. 1000000
  6. 11. not long ago
  7. 12. a huge cluster of stars