Jack 7th

123456789101112131415161718
Across
  1. 1. Squeezing atoms together
  2. 3. Loop of gas
  3. 6. Effect Tells us galaxies are moving away
  4. 7. galaxy Swirl shape
  5. 9. wind Stream of charged particles
  6. 10. hole Collapsed neutron star, no light escapes
  7. 12. dough theory The raisins spread apart as the bread rises
  8. 13. year 9 Trillion miles
  9. 16. galaxy No shape
  10. 17. sequence Fusion of hydrogen to helium
  11. 18. Cooler areas on surface
Down
  1. 2. star Collapsed core of high mass star
  2. 4. galaxy Egg shape
  3. 5. Apparent shift
  4. 8. Warm rises, cool sinks
  5. 11. Hottest layer of atmosphere
  6. 12. Bang Start of expansion
  7. 14. Cloud of gas and dust
  8. 15. Bright center of a distant galaxy