Across
- 2. warm rises, cool sink
- 3. fusion of h2 and He
- 5. cloud of gas and dust
- 6. cooler areas on surface
- 9. squeezing atoms together
- 10. bright center of a distant galaxy
- 12. start of expansion
- 13. apparent shift
- 14. Smallest galaxy
- 15. collapsed neutron star no light escapes
- 17. The raisins spread apart as the bread rises
- 18. loop of gas
- 19. wind Stream of charged particles
Down
- 1. hottest layer of atmosphere
- 4. Oval shaped
- 7. Young stars outside old stars inside
- 8. collapsed core of high mass star
- 11. tells us galaxies are moving away
- 16. 9 trillion miles