Astronomy Vocabulary

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Across
  1. 2. Includes the Sun and all the planets orbiting around it
  2. 4. Ball of hot gas
  3. 7. Object that explores places too dangerous for humans
  4. 9. Device that measures the spectrum of light
  5. 10. What all planets in our solar system orbit around
  6. 11. A large cluster of stars and dust
  7. 12. Name of our galaxy
Down
  1. 1. A group of galaxies
  2. 3. Name of the galaxy we will eventually collide with
  3. 5. Everything that has ever existed is in the ________
  4. 6. What is at the center of our galaxy
  5. 8. Cloud of dust and gas that forms stars