Across
- 3. dark, cooler areas of the sun's surface
- 5. force of attraction
- 6. gas and dust held together by gravity
- 7. stage of a star's formation
- 8. center of the earth
Down
- 1. constellations that rotate around the North star
- 2. smallest of all stars
- 4. star system that contains two stars
- 5. large star with great luminosity