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Aurora

GS Paper III Science and Technology Space

Context:

Researchers have for the first time analysed data of “carbon dioxide auroras” taken from space.

About Aurora:

An aurora is a natural phenomenon which is characterised by a display of a natural-coloured (green, red, yellow or white) light in the sky.
Formation: It is a light show which is caused when electrically-charged particles from the sun collide with particles from gases such as oxygen and nitrogen present in the Earth’s atmosphere.
Aurora is sometimes referred to as ‘polar light’.
It is predominantly seen in the regions of high altitudes like the Arctic and Antarctic.
Auroras are seen in latitudes of around 70 degrees. They generally occur in a band known as ‘auroral zone’.
Auroras that occur in the Northern hemisphere are known as aurora borealis and auroras that take place in the Southern hemisphere are known as aurora australis.
Auroras can appear in various forms like streamers, patches, arcs, scattered light, diffused light etc.

News Source: Indian Express

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