Across
- 2. Large cloud of gas and dust
- 4. bang when the universe exploded into existence
- 7. a contracting cloud of gas and dust
- 8. distance that light travels in a year
- 10. brightness brightness seen from earth
Down
- 1. dwarf the blue white core that is left behind and cools
- 3. all of space and everything in it
- 5. explosion of a star
- 6. brightness Brightness a star would have if it were at the standard distance from earth
- 9. group of single stars, star systems, star clusters, dust and gas bound together by gravity