Across
- 3. equivalent to 31 trillion km
- 5. refers to anything having to do with the stars
- 6. indicates the rate of motion away from us
- 7. the combination of the star’s radial motion and proper motion
- 8. the extra heat produced causes the star to expand
- 10. a violent nuclear explosion, producing a temporary bright flash
- 11. the apparent magnitude that a star would have if we placed it at a standard distance
- 12. tells us the rate of motion toward us
- 14. a huge red star
- 15. the apparent change in position of a distant object as one’s viewing position changes
Down
- 1. one way of organizing information
- 2. the first variable stars to be observed
- 4. A stars brightness compared with other stars as viewed from earth
- 9. the star’s motion across the line of sight
- 13. one unit for distances between stars