Stars Unit

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Across
  1. 2. planets that are cooler and consists of gases
  2. 3. galaxy with arms around the outside of a lump
  3. 5. planets made out of a rocky substance
  4. 6. determines how long a star will live
  5. 9. imaginary patterns of a group of stars
  6. 10. large cloud of gas and dust
  7. 14. galaxy without a shape
Down
  1. 1. unit of measurement used to measure distances between stars
  2. 4. used to measure distance to a nearby star
  3. 7. brightness if it were a standard distance from Earth
  4. 8. supergiant explodes into this
  5. 11. star system with two stars
  6. 12. brightness as seen from Earth
  7. 13. young galaxy with a black hole for its center