Across
- 3. -stream of changed particles.
- 6. -q trillion miles.
- 7. -starts of expansion.
- 10. -bright center of a distant galaxy.
- 13. -loop of gas.
- 14. -tells us galaxies are moving away.
- 18. -cloud of gas and dust.
- 19. -Irregular shape.
Down
- 1. -outer stars are hot and young, inner is
- 2. -hottest layer of atmosphere.
- 4. -collapsed core of a high mass star.
- 5. -Oval shaped, old stars.
- 8. -cooler areas on surface.
- 9. -fusion of H2 and Helium.
- 11. -the raisins spread apart as bread rises.
- 12. -collapsed neutron star, no light escapes.
- 15. -squeezing atoms together.
- 16. -warm rises, cool sinks.
- 17. -apparent shift.
