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