Across
- 4. Fusion of h2 and he
- 6. rises
- 7. loop of gas
- 10. tells us galaxies are moving away
- 11. collapsed core of a high mass star
- 16. egg shaped
- 19. hottest layer of atmosphere
- 20. clouds of gas and dust
Down
- 1. The raisins are spread apart as the
- 2. collapsed neutron stars no life escapes
- 3. 6 trillion miles
- 5. cooler areas of surface
- 8. mess group of stars
- 9. warm rises cool sinks
- 12. in a spiral shape
- 13. bright center of a distant galaxy
- 14. bang start of expansion
- 15. squeezing adams together
- 17. Apparent shift
- 18. stream of charged particles