Properties of Stars

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Across
  1. 4. the interval between two successive occurrences of maximum brightness
  2. 6. a very large, very bright red giant star
  3. 7. the brightness of a star when viewed from Earth
  4. 9. one of two stars revolving around a common center of mass under their mutual gravitational attraction
  5. 10. how many kilometers away is the sun from earth
  6. 11. red shifts occur because the light wave frequency is reduced
Down
  1. 1. a law that states that the galaxies are retreating from the Milky Way at a speed that is proportional to their distance
  2. 2. the apparent brightness of a star if it were viewed from a distance of 32.6 light-years
  3. 3. an apparent group of stars originally named for mythical characters
  4. 5. a large, cool star of hight luminosity; a star occupying the upper right portion of the H-R diagram
  5. 8. the slight shifting in the apparent position of a nearby star due to the orbital motion of Earth