Galaxies and Lightyears

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Across
  1. 3. galaxy with no defined shape
  2. 4. that is oval shaped
  3. 5. million or billions of stars, made of gas,and dust
  4. 7. central region of the Milky Way Galaxy
  5. 8. all of space including stars,planets,galaxies
  6. 9. made up of all the celestial objects like planets, asteroids,and moons that orbit the sun or orbit other objects that are orbiting the sun
  7. 10. disk shaped and has arms coming out around it
Down
  1. 1. spiral shaped with arms coming out around a dense center of stars
  2. 2. spiral galaxy in which we live in
  3. 6. distance light travels in one year