Across
- 3. a star that suddenly becomes brighter
- 8. Nebula cloudy remnants of smaller stars that have shed their outer layers of gas
- 9. Sequence location on the H-R diagram where most stars lie
- 12. a large cloud of dust and dust in interstellar space
- 13. Flare an explosive release of energy that comes from the sun and that is associated
- 15. a star that has such a tremendous explosion that it blows itself apart
Down
- 1. a large celestial body that is composed of gas and that emits light
- 2. Mass Ejection coronal gas that is thrown into space from the sun
- 4. a very large star that is even brighter than a giant
- 5. Hole on object so massive and dense that even light cannot escape its gravity
- 6. Giant a very large and bright star
- 7. dwarf a small, hot dim star that is the leftover center
- 10. a rapidly spinning neutron star that emits pulses of radio and optical energy
- 11. a dark area of the photosphere of the sun that is cooler than the surrounding areas
- 14. Star a star that collapsed under gravity