Across
- 2. , first stage of a stars formation
- 6. , the universe exploded
- 7. , is the brighness the star would have if it was a standerd distance from earth
- 9. , all of space and everything in it
- 10. , a large cloud of gas and dust
Down
- 1. , its brightness as seen from earth
- 3. , the blue and white core cools
- 4. , the disance light travels in a year
- 5. , is a group of single stars
- 8. , a exploded star