Astronomy Final

12345678910111213141516171819
Across
  1. 2. What planet does not have an atmosphere
  2. 4. Planet with a runaway green house effect
  3. 7. Explosion of a high mass star
  4. 10. When gravity pulls gas and dust together to form objects
  5. 11. All gas planets have ____
  6. 12. Galaxies that are round in shape
  7. 14. Planet must have this for life
  8. 17. dim but hot stars on the HR diagram
  9. 18. Redshift is moving_____
  10. 19. As temperature increases on the HR diagram, Brightness ____
Down
  1. 1. What planet's atmosphere weakened drastically
  2. 2. Stage of our sun
  3. 3. Largest planet in our solar system
  4. 5. Stars get energy from Nuclear ____
  5. 6. Planet with a hexagon storm
  6. 8. Our solar system formed by the solar ______ theory
  7. 9. planets that have the capacity for life are__
  8. 13. Galaxies with no definite shape
  9. 15. The milky way is a _______ galaxy
  10. 16. Blueshift is moving ___