The Chromosphere
The chromosphere is the first layer of the stellar atmosphere. While not usually visible, its electromagnetic radiations (our main source of information on it) are red, from the H-alpha spectral line.
The chromosphere is also the source of some solar weather phenomena. The most notable is a fibril, also known as a spicule, which is a jet of plasma originating on the parrier of the chromosphere & photosphere, and extending into the corona. They last around 15 miniutes, and around 3 million occur simultaneously. While the cause is currently unknown, it follows the 11-year pattern of magnetic flux that other solar weather does.
Facts
| Temperature |
Size in sun |
Density |
Composition |
| 6,000 -> 3,800 -> 35,000 kelvin |
3-5 thousand kilometres |
2x10^-4g/cm^3 - 1.6x10^-11g/cm^3 |
Plasma & electromagnetic radiation |
Select an image to the left for more information