Across
- 3. rapidly spinning neutron stars
- 5. the cooler core of a star that is left behind
- 7. Burning ball of gas
- 9. Hottest color for a star
- 10. Charged particles coming from the sun
- 13. the brightness as seen from earth
- 14. Center, hottest part of the sun
- 16. inner layer
- 17. remains of a high-mass star
- 18. a large cloud of gas and dust
- 20. the color of our sun
- 21. explosion and brightness when a supergiant runs out of fuel
- 22. eruptions of gas and magnetic energy
Down
- 1. huge loops of gas on the sun
- 2. dark, cool spots on the sun
- 4. in the H-R diagram, the diagonal where most of the stars are
- 6. H and He coming together and creating energy
- 8. the actual brightness if it was where the sun is
- 9. an object with gravity so strong nothing can escape it
- 11. Coolest color for a star
- 12. the beginning of a star
- 15. middle layer
- 19. Outer layer