Science

Rare ‘polar rain’ aurora seen from Earth for the first time

A remarkably smooth and puzzling Christmas Day aurora observed over the Arctic in 2022 was the result of a ‘rainstorm’ of electrons direct from the sun, says Japanese and US-based researchers.

It is the first time that a rare aurora of this kind has been seen from the ground, and it came at a time when the gusts of the solar wind had almost completely dropped off, leaving a region of calm around the Earth.


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