Across
- 2. warm rise, cool sinks
- 4. the raisins spread apart as bread rises
- 6. cloud of gas and dust
- 8. loop of gas
- 11. smallest galaxy
- 12. cooler areas on surface
- 14. tells us galaxies are moving away
- 15. apparent shifts
- 16. fusion of h2 and he
- 18. collapsed neutron star no light escapes
- 19. start of expansion
Down
- 1. all old stars
- 3. hottest layer of atmosphere
- 5. collapsed core of a high mass star
- 7. 6 trillion miles
- 9. squeezing atoms together
- 10. bright center of a distant galaxy
- 13. young stars in legs, older stars in center
- 17. Stream of charged particles