Across
- 3. how hot a star is
- 5. star shedding its outer layer
- 6. fusing hydrogen into helium in its core
- 7. star extremely dense leftover core of a star that is spinning rapidly
- 8. very hot leftover core of a star
- 10. violent explosion of a star
- 11. cloud of gas and dust
- 13. beginning of the universe
Down
- 1. 90% of stars are in this stage
- 2. pattern of light when passed through a prism
- 4. area of extreme gravity where nothing can escape
- 5. not yet fusing hydrogen in helium in its core
- 9. used up its hydrogen fuel, much larger and red
- 12. how bright a star is