Astrophysics and Cosmology Crossword

123456789101112131415161718192021222324
Across
  1. 4. variable stars have luminosity that depends on this
  2. 9. Another name for the output power of a star
  3. 11. the type of bluish star typically found in class O
  4. 13. one of the axes on a Hertzsprung-Russell diagram
  5. 17. standard star whose luminosity can be determined independently of its distance
  6. 21. unit of distance equalling the radius of the earth´s orbit
  7. 22. red shift is a special case of this phenomenon
  8. 23. the angle that defines a parsec
Down
  1. 1. nuclei of this gas are fused when the star runs out of hydrogen
  2. 2. Hubble´s constant multiplied by the distance of the galaxy
  3. 3. gravitational effect that causes a bending of light
  4. 5. the quantity that determines the fate of the universe
  5. 6. a common unit of distance in astronomy
  6. 7. this counteracts the effect of gravity to prevent stars from collapsing
  7. 8. the diagonal line across a Hertzsprung-Russell diagram shows the main .............. stars
  8. 10. word that describes movement away from an observer
  9. 12. earliest stage in star formation
  10. 14. one quarter of the universe is made of dark....
  11. 15. the largest element that can be formed from fusion in a massive star
  12. 16. type of spectrum with white lines on continuous background
  13. 18. the type of reddish star typically found in class M
  14. 19. Whose law relates the peak output wavelength to the temperature?
  15. 20. "energy" responsible for the accelerating expansion of the universe
  16. 24. final stage in the life of the most massive stars