Across
- 5. a young star
- 9. nothing can escape
- 10. when stars and gas clouds circle around a center
- 11. all of time and space
- 12. extremely luminous nucleus
Down
- 1. when a star explodes
- 2. 5.88 trillion miles
- 3. two stars revolve around each other
- 4. a huge collection of space objects
- 6. highly magnetized neutron star
- 7. a star the size of a planet
- 8. the nursery for stars