Across
- 2. Cloud of gas and dust from star
- 4. Bright center of a distant galaxy
- 9. egg shaped galaxy
- 11. fusion of h2 and he in star
- 12. collapsed core of a high mass star
- 13. Warm rises cool sinks
- 15. Cooler areas on surface
- 17. the raisins spread apart as bread dough rises
- 18. tells us if galaxies are moving towards us or away
- 19. apparent shift in space
Down
- 1. 9 trillion miles
- 3. collapsed neutron star where no light escapes
- 5. spiral shaped galaxy
- 6. Wind stream of charged particles
- 7. Theoretical start of universe expansion
- 8. Squeezing atoms together
- 10. galaxy that has no shape
- 14. Hottest layer of atmosphere in sun
- 16. Loop of gas