Across
- 1. Squeezing atoms together
- 3. Loop of gas
- 6. Effect Tells us galaxies are moving away
- 7. galaxy Swirl shape
- 9. wind Stream of charged particles
- 10. hole Collapsed neutron star, no light escapes
- 12. dough theory The raisins spread apart as the bread rises
- 13. year 9 Trillion miles
- 16. galaxy No shape
- 17. sequence Fusion of hydrogen to helium
- 18. Cooler areas on surface
Down
- 2. star Collapsed core of high mass star
- 4. galaxy Egg shape
- 5. Apparent shift
- 8. Warm rises, cool sinks
- 11. Hottest layer of atmosphere
- 12. Bang Start of expansion
- 14. Cloud of gas and dust
- 15. Bright center of a distant galaxy