Across
- 3. a faint "wind" of high-speed gas particles that stream into space from the sun's corona
- 4. double a pair of stars that appear close together but are actually far apart
- 6. type of magnitude meaning the actual brightness of a star
- 9. the sun's visible surface
- 10. the hot central part of the sun
- 13. the violent explosion of a star
- 14. the brightness of a star
Down
- 1. a huge loop of cooler gas erupting thousands of miles from the chromosphere that is suspended in space by the sun's magnetic field
- 2. the hottest region of the sun's atmosphere, extending hundreds of thousands of miles from the sun's surface
- 3. tremendous bursts of energy caused by sudden changes in the sun's magnetic field
- 5. dark patches on the sun's surface caused by the sun's magnetic field
- 7. stars outlining an imaginary picture
- 8. unit used to measure great distances, such as the distances between the stars; equal to about 5.9 trillion miles
- 11. magnitude that depends on a star's actual brightness and its distance from earth
- 12. star a group of two stars that circle around each other
- 15. a star that suddenly flares up to many times its original brightness