Across
- 4. all of space and everything in it
- 6. accurate scale of solar system
- 7. brightness brightness of a star if it were at a standard distance from earth.
- 8. brightness light seen from earth
- 11. is a group of single stars
Down
- 1. dwarf blue and white core that is left behind
- 2. when super giant runs out of fuel and explodes
- 3. year distance light travel in one year
- 5. bang universe exploded
- 7. to look at more close
- 9. cloud of gas and dust and mass to form a star
- 10. large cloud of glass