Across
- 4. us galaxies are moving away
- 6. raisins spread apart as the bread rises
- 7. shift
- 12. of charged particles
- 14. areas on surface
- 15. of H2 and He
- 16. old stars
- 17. center of a distant galaxy
Down
- 1. of gas
- 2. trillion miles
- 3. neutron star,no light escapes
- 5. core of a high mass star
- 6. of expantion
- 8. atoms together
- 9. of gas and dust
- 10. stars in wings,old in middle
- 11. layer of atmosphere
- 13. rises,cool sinks