Across
- 5. all matter in space
- 6. clues or information that help support answers or theories
- 7. a force that pulls two objects together
- 9. an object in which nothing can escape because of it's density
- 11. a lot of stars, dust, and gases held together by gravity
- 12. Planets and objects that revolve around a star
- 13. a bunch of gas and dust in space
- 14. a flat galaxy containing older stars
Down
- 1. theories that are formed to prove facts
- 2. the distance light travels in a year
- 3. big explosion of a star
- 4. spiral galaxy in which our Solar System is located in
- 8. average distance between Earth and Sun
- 10. a type of galaxy that has arms and has a bulge in the center