Across
- 2. hole collapsed neutron star no light
- 4. star collapsed core of a high mass star
- 7. wind stream of charged particles
- 8. effect tells us galaxies are moving away
- 12. Galaxy smallest
- 14. cloud of gas and dust
- 15. Galaxy young stars in arms old stars in the middle
- 16. Bright center of a distance galaxy
- 17. squeezing atoms together
- 18. dough theory the raisins spread apart as the bread rises
Down
- 1. year 6 trillion miles
- 3. Warm rises, cool sinks
- 5. Galaxy oval shaped
- 6. Hottest layer of atmosphere
- 9. Loop of gas
- 10. cooler areas on surface
- 11. sequence fusion of hydrogen and helium
- 13. apparent shift
- 18. bang start of expansion