TEK 8.8A (universe)

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Across
  1. 2. a very small type of star
  2. 3. the galaxy we live in
  3. 5. a bright point in space (our sun is one)
  4. 7. the largest type of star
  5. 8. the main type of star
  6. 11. a very large type of star
Down
  1. 1. a tool used to classify stars
  2. 4. the brightness of a star
  3. 6. when two or more things collide form onething
  4. 9. all of space and time
  5. 10. cloud of dust and gas in space