Across
- 1. the distance from one point on a wave to a corresponding point
- 5. Sequence holds roughly 90% of the stars in the galaxy
- 8. groups of stars
- 9. Magnitude one of the most basic observable properties of a star is how bright it appears
- 10. apparent shift in position cause by the motion of the observer
Down
- 2. power of brightness
- 3. Diagram a graph which shows absolute magnitude being plotted on a vertical axis and temp
- 4. a larger unit than a light year
- 6. Magnitude system of brightness
- 7. Stars when only two stars are gravitationally bound together and orbit a common center of mass