Across
- 2. most common type of star
- 8. known as failed stars
- 9. hot, massive, bright and have a short life that ends in supernova
- 10. two stars that orbit around a common center of mass
- 12. nuclear fusion has stopped and star collapses inward
- 13. emits beams of electromagnetic radiation out of its poles and spins
- 14. collection of collapsed gas
- 17. massive, hot and bright stars
- 18. when a massive star collapses and gravity pulls it into a singularity
- 19. largest stars in the universe
- 20. right before main sequence begins
Down
- 1. hottest and most massive main sequence stars
- 3. hydrogen shell burning (aged main sequence star)
- 4. good candidate for extraterrestrial life
- 5. scatter plot of stars
- 6. not massive enough to fuse hydrogen
- 7. collapsed cores of massive stars after a supernova explosion
- 11. very large expanded star, though not as massive or bright (nuclear fusion is stopping)
- 15. type G (our Sun)
- 16. fusion powerd stable stars