The sun's atmosphere: Photosphere, chromosphere and corona
Jun 21, 2022 · The sun's atmosphere has three layers: the photosphere, the chromosphere and the corona. We explore each layer in more detail here.
The Colorful Chromosphere: Sun’s Lower Atmosphere
The lower region of the Sun's atmosphere is called the chromosphere. It was named after the Greek root chroma (meaning color). The chromosphere appears bright red because the hydrogen in the Sun emits a reddish-colored light at high temperatures.
Chromosphere - Wikipedia
A chromosphere ("sphere of color") is the second layer of a star's atmosphere, located above the photosphere and below the solar transition region and corona. The term usually refers to the Sun 's chromosphere, but not exclusively.
NASA/Marshall Solar Physics
Aug 11, 2014 · The chromosphere is an irregular layer above the photosphere where the temperature rises from 6000°C to about 20,000°C. At these higher temperatures hydrogen emits light that gives off a reddish color (H-alpha emission).
Layers of the Sun - NASA
Oct 10, 2012 · Chromosphere – The chromosphere is a layer in the Sun between about 250 miles (400 km) and 1300 miles (2100 km) above the solar surface (the photosphere).
Chromosphere | Sunspot, Solar Flare & Corona | Britannica
Chromosphere, lowest layer of the Sun’s atmosphere, several thousand kilometres thick, located above the bright photosphere and below the extremely tenuous corona. The chromosphere (colour sphere), named by the English astronomer Sir Joseph Norman Lockyer in 1868, appears briefly as a bright.
Sun - Chromosphere, Corona, Solar Flares | Britannica
6 days ago · When astronomers observe the Sun from space at ultraviolet wavelengths, the chromosphere is found to emit lines formed at high temperatures, spanning the range from 10,000 to 1,000,000 K.
Chromosphere - NSO - National Solar Observatory
Chromosphere literally means “sphere of color.” This is the second of the Sun’s three main layers of atmosphere. This layer sits just above the photosphere between about 400 km (250 miles) and 2,100 km (1,300 miles) above the solar surface.
ESA - Anatomy of our Sun - European Space Agency
Oct 7, 2019 · Chromosphere. This is the layer above the photosphere, where the density of plasma drops dramatically. In general, the chromosphere is roughly 1000–2000 km thick, with a temperature that rises from around 4000 to about 25 000 °C. Spires of chromospheric gas, known as spicules, can reach up to a height of 10 000 km. Transition region.
In Depth | Sun – NASA Solar System Exploration
The photosphere, chromosphere, and corona are all part of the Sun’s atmosphere. (The corona is sometimes casually referred to as “the Sun’s atmosphere,” but it is actually the Sun’s upper atmosphere.)