| A | B |
|---|
| corona | outermost layer of the sun's atmosphere |
| chromosphere | middle layer of the sun's atmosphere |
| photosphere | innermost layer of sun's atmosphere - the sun's "surface" |
| core | center of the sun |
| prominence | huge, bright arch or loop of hot gas on the sun |
| solar flare | bright burst of light on the photosphere |
| solar wind | continuous stream of high-energy particles released into space |
| sunspot | dark, cool area on the photosphere |
| axis | imaginary line through the center of a body |
| protostar | a new star |
