Across
- 2. tells us galaxies are moving away
- 6. collapsed core of a high mass star
- 9. could of gas and dust
- 10. loop of gas
- 11. collapsed neutron star,no light escapes
- 13. the raisins spread apart as the bread rises
- 16. bright center of distant galaxy
- 17. fusion of H2, and HE
- 18. old stars
- 19. squeezing atoms together
Down
- 1. no shape
- 3. cooler areas on surface
- 4. warm rises, cool sinks
- 5. apparent shift
- 7. 6 trillion miles
- 8. hot, young stars in the arms,old in center
- 12. streams of charged particles
- 14. hottest layer of atmosphere
- 15. start of expansion