Stars

4. lowest layer of the Sun's atmosphere that is also its visible surface
6. arrangement of visible light ordered according to wavelength
7. wind of charged particles that begins as gas flowing outward from the Sun's corona at high speeds
9. apparent positional shift of an object caused by the motion of the observer
11. brightness of an object would have if it were placed at a distance of 10 pc
13. a faint cloudy spot on the cornea. Also a star factory
14. a gaseous layer of the sun's atmosphere
17. violent eruption of radiation and particles from the Sun's surface
18. dark spot on the surface of the photosphere

1. arc of gas ejected from the chromosphere
2. a star that explodes
3. An instrument that separates light into a spectrum
5. how bright a star will be in relation to the sun
8. a region of the sun where gases circulate in convection currents
10. Star a star that has collapsed under its own gravity
11. classification system based on how bright a star appears to be
12. an atmospheric phenomenon consisting of bands of light caused by charged solar particles
14. the outermost region of the sun's atmosphere
15. process in a star's core in which lightweight hydrogen nuclei combine into heavier helium nuclei
16. Hole a region of space resulting from the collapse of a star