Airglow
Videos
Airglow is a faint emission of light by a planetary atmosphere. In the case of Earth's atmosphere, this optical phenomenon causes the night sky never to be completely dark, even after the effects of s
Airglow over Auvergne, France
Yellow, green and red bands of airglow along Earth's limb as seen from space.
Types and layering of airglow above Earth
Airglow as pinkish orange sodium line at just below one hundred kilometers and a faint green line, at the edge of space and the lower edge of the thermosphere (invisible), sandwiched between green and red bands of aurorae stretching over several hundred kilometers upward and the pink mesosphere, white and blue stratosphere, as well as orange troposphere afterglow and silhouettes of clouds at the bottom.
Aurora
Videos
An aurora is a natural light display in Earth's upper atmosphere caused by charged particles from the Sun colliding with atoms in the atmosphere. These collisions excite oxygen and nitrogen, which the
Airglow
…side are removed. This phenomenon originates with self-illuminated gases and has no relationship with Earth's magnetism or sunspot activity, causing aurorae. Airglow occurs in two forms, as a result of a pair of interlinked but different processes. Dayglow occurs during the day and is caused by the splitting…
Different forms
Divergence point of a coronal aurora
2024 appearance seen in England radiating blue through red aurora