Across
- 6. group of stars to which our solar system belongs to
- 7. how bring a star actually is
- 10. small, white, hot, dense star that remains after a nova
- 11. process by which particles combine to form a new particle
- 12. pattern of stars seen from earth
- 14. very small, very dense star that remains after a supernova
Down
- 1. distance that light travels in one year
- 2. group of billions of stars
- 3. how bright a star looks
- 4. region in space with tremendous gravity, caused by the collapse of a huge star
- 5. brilliant explosion of a collapsed red giant
- 8. star that has expanded after using up its hydrogen
- 9. brilliant explosion of a collapsed supergiant
- 13. everything that exists