Across
- 2. is the brightness the stars would have if it were at a standard distance from earth
- 5. blue-white core that is left behind cools and becomes a
- 6. all of space and everything in it
- 8. the distance that light travels in one year
- 9. is a group of single stars, star systems, star clusters, dust, and gas bound together
- 10. cloud of gas and dust with enough mass to form a star
- 12. is a large cloud of gas and dust containing an immense volume of material
Down
- 1. a more accurate scale of the entire solar system
- 3. when a super giant runs out of fuel it explodes
- 4. a stars brightness as seen from earth
- 7. when the universe exploded
- 11. a thing that telescopes do to light