galaxies

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Across
  1. 4. core a supermassive black hole of about 4 million solar masses
  2. 5. the distance light travels in one year
  3. 6. all of space and everything in it including stars, planets, galaxies, etc.
  4. 7. the spiral galaxy in which we live
  5. 8. made up of all the celestial objects like plant, astroid, and moons
  6. 9. a system of millions or billions of stars, made of gas and dust, held together by gravitational attraction. Galaxies are different shapes and shapes.
  7. 10. a galaxy with no defined shape; made from 2 galaxies that collided
Down
  1. 1. a galaxy that is disk-shaped with "arms" spreading out around a dense center
  2. 2. a galaxy that is spiral-shaped with "arms" spreading around a dense center
  3. 3. a galaxy that's oval shaped