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