Across
- 4. stream of charged particles
- 5. loop of gas
- 6. hottest layer of atmosphere
- 9. start of expansion
- 10. cooler areas on surface
- 12. small, no shape
- 13. collapsed neutron star no light escapes
- 14. bright center of a distant galaxy
- 15. oval shaped, all old stars
- 17. tells us galaxies are moving away
Down
- 1. squeezing atoms together
- 2. apparent shift
- 3. collapsed core of high mass star
- 7. cloud of gas and dust
- 8. 6 trillion miles
- 10. old stars in the middle, hot young stars on the outside
- 11. warm rises cool sinks
- 13. the raisins spread apart as the bread rises
- 16. fusion of h2 and he