Across
- 2. a giant cloud of gas that act as a nursery for stars
- 7. a star that is the size of a planet
- 8. when gas and stars circle around a center
- 9. when a gas cloud forms a hot core
- 10. A huge collection of solar objects
- 11. Nothing can escape
- 12. Absolute luminosity in space
Down
- 1. when two stars circle around each other
- 3. 5.88 trillion miles
- 4. Star seen from earth
- 5. when the stars reach the end of their life and explode
- 6. an extremely luminous galactic nucuelus