Across
- 3. all new stars in the arms old in center
- 6. tells us galaxies are moving away
- 8. start of expansion
- 12. cloud of gas and dust
- 13. apparent shift
- 15. collapsed core
Down
- 1. collapsed neutron star no light escapes mainsequence fusion of H and He
- 2. hottest layer of atmosphere
- 4. no defined shape
- 5. warm rises cool sinks
- 7. elliptical shape
- 9. 6 trillion miles
- 10. the raisins spread apart as the bread rises quasar bright center of a distant galaxy
- 11. squeezing atoms together
- 14. loop of gas sunspot cooler areas on surface
- 16. stream of charged particle