Across
- 2. a large reddish star late in its life cycle
- 4. everything that exists in space and in time
- 5. a big hot ball of fire in the center of the universe
- 6. light cant leave this
- 9. a object that produces very high energy
- 12. a small dim dense star
- 13. the outside layer of the sun
- 14. the distance a star travels in a year
Down
- 1. an American astronomer
- 3. groups of stars that create shapes
- 5. a huge bright explosion
- 7. a group of stars or galaxies
- 8. the planet that we live on
- 10. huge sphere of hot gas
- 11. a collection of millions to billions of stars