Across
- 3. The planet closest to the sun.
- 6. Used to qualify as a planet.
- 8. Groups of stars that have regularly recognized positions.
Down
- 1. Planets are divided into two ______.
- 2. A star's _____ indicates its temperature.
- 4. The sun is the nearest star to ______.
- 5. A red star is ___ than a blue star.
- 7. All the planets revolve around the sun.
- 9. We measure the brightness of stars in how many ways?
- 10. The big dipper is made up of how many stars?