Does the sun have an atmosphere?

The the sun He has an atmosphere. The three layers that focus primarily on the photosphere, the chromosphere, and the corona. The photosphere is also known as the surface of the Sun, while the chromosphere and corona are referred to as the lower and upper atmosphere, respectively. The further away you are from the core of the Sun, the more logical it will be for the Sun to get colder. This, however, is not the case. As you progress through the layers of the sun’s atmosphere, the Temperatures Getting increasingly higher. There are some theories as to why this happens but none have been concretely proven.


Picture of a solar flare explosion on the surface of the sun. Image credit: NASA/SDO

The photosphere is the visible surface of the sun where most of the energy is emitted. In the photosphere, you can see features known as sunspots. Sunspots are caused by differences in the magnetic field and can be the size of planets. These differences cause this layer of the sun to be cooler than the surrounding areas, as well as paving the way for eruptions like Solar flares. Solar flares are big explosions of electromagnetic radiation from the sun. Temperatures in the photosphere range between 7,460 degrees Fahrenheit and 11,000 degrees Fahrenheit.


The sun in a different light
An image of the sun taken at multiple wavelengths of light. Image credit: NASA/SDO

Sitting above the photosphere is the chromosphere, also known as the Sun’s lower atmosphere. With temperatures ranging from 6,700 degrees Fahrenheit to 14,000 degrees Fahrenheit, this layer goes against the general rule that temperatures get colder the further away from the core of the Sun. Scientists have not yet reached a clear consensus about why the sun’s atmosphere is hotter than its surface. One leading theory is that this layer is heated by “nanoflares” fixed in the photosphere. Nanoflare refers to solar flares that are one billionth the size of an ordinary glow. The nanoflares can theoretically reach temperatures of up to 18 million degrees Fahrenheit. This theory states that these eruptions could be the cause of higher temperatures in the Sun’s atmosphere. The chromosphere can only be seen during a solar eclipse because it is overshadowed by the bright photosphere. The red glow surrounding the Sun during this phenomenon is the chromosphere. Alpha hydrogen is responsible for this red glow because it is ionized. The chromosphere extends 1,200 miles past the photosphere, leading to the corona.


solar crown
The sun’s corona can be seen as the light surrounding the entire body. Image credit: NASA/SDO

The corona is composed primarily of plasma and extends millions of miles outward outer space. Like the chromosphere, this layer is visible during a solar eclipse but can also be observed using a vertebra. The corona is 300 times hotter than the chromosphere at 2 million degrees Fahrenheit. strong magnetic fields Stop the intense solar winds from escaping the atmosphere. Together with the nanoflares, it is assumed that this layer is extremely hot due to solar cyclones. Solar cyclones are huge cyclones that consist of hot liquid gas with magnetic field lines that keep them stationary. Scientists estimate that there are about 11,000 solar storms on the sun at any given time. The heat emitted by these hurricanes due to nuclear reactions in the heart of the sun. The electromagnetic lines that keep hurricanes in place are seen to transmit this nuclear energy from the core of the sun.

Sun layer temperatures

sun layer hottest temperature


27 million degrees Fahrenheit


11,000 degrees Fahrenheit


14000 degrees Fahrenheit


2 million degrees Fahrenheit