Across
- 1. a explosion
- 5. is a larger cloud of gas and dust
- 7. brightness a brightness that a star would have if it were a standard distance from earth
- 8. it the distance that the light travels in one year
- 9. brightness is a brightness that can be seen from earth
- 10. when the universe exploded
Down
- 2. is all of space and everything in it
- 3. the first stage of a star formation
- 4. is a group of single stars
- 6. the blue-white cor that is left behind