Across
- 4. hottest layer of atmosphere
- 7. bright center of a distance galaxy
- 8. tells us galaxies are moving away
- 10. stream of charged particles
- 11. old stars on inside new on outside
- 12. squeezing atoms together
- 16. a trillion miles
- 17. collapsed neutron star no light escape
- 18. oval shaped
- 19. warm rises cool sinks
Down
- 1. cloud of gas and dust
- 2. cooler areas on surface
- 3. theory raisins are going farther apart as the bread gets bigger
- 5. start of expansion
- 6. apparent shift
- 9. alot of stars
- 13. loop of gas
- 14. fusion of H2 and He
- 15. collapsed core of a high mass star