Across
- 5. bang start of expansion
- 7. the raisins spead apart as the bread rise
- 9. steam of charged particles
- 11. hottest layer of atmosphere
- 12. collaped core of high mass star
- 13. smallest galaxy
- 16. oval shape
- 18. cooler areas on the surface
- 19. squeezing atoms together
Down
- 1. fusion of H2 and He
- 2. collapsed neutron star no light escapes
- 3. warm rise cool sinks
- 4. six trillion miles
- 6. effect tells us galaxies are moving away
- 8. old stars inside and new stars in arms
- 10. apparent shirt
- 14. bright center of a distant galaxy
- 15. cloud of gas and dust
- 17. loop of gas