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5 of the weirdest auroras

Dragon
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Post by Dragon Sun Mar 29, 2020 12:54 am

5 of the weirdest auroras 020420_mt_aurora_feat-1028x579
Pirjo Koski

A newly discovered kind of aurora named the “dunes” (horizontal green stripes of light pointing to the left) is just the latest addition to a menagerie of obscure types of northern and southern lights.

Continued...
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Post by Dragon Sun Mar 29, 2020 12:55 am



A new type of aurora called the “dunes” appears as green stripes across the night sky. Scientists think these green lines mark the crests of atmospheric waves, where there’s a relatively high density of molecular oxygen. That oxygen glows green when it’s bombarded with electrons incoming from near-Earth space.


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Post by Dragon Sun Mar 29, 2020 2:00 am



Pulsating aurora

These auroral lights are blinking patches of sky, up to hundreds of kilometers across, that rhythmically brighten and dim.



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Post by Dragon Sun Mar 29, 2020 2:04 am

5 of the weirdest auroras 020420_mt_aurora_inline1_680
Trond Abrahamsen/Andøya Space Center

Cusp aurora

Near the North Pole and the South Pole, Earth’s magnetic field lines bend toward the ground, creating funnel-shaped “cusps” in the magnetosphere (blue in this illustration).

Solar wind particles that travel through these corridors to the atmosphere illuminate dim, red cusp auroras — although these midday auroras are visible only in extremely northern climes that are continuously dark in winter.

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Post by Dragon Sun Mar 29, 2020 2:06 am

5 of the weirdest auroras 020420_mt_aurora_inline2_680-573x450
NASA Goddard Space Flight Center/Flickr

The airglow known as STEVE is a mauve, east-to-west smear in the night sky. The source of that mauve ribbon is still a mystery.

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Post by Dragon Sun Mar 29, 2020 2:16 am

5 of the weirdest auroras Aurora_andreassen
Credit & Copyright: Frank Andreassen (nettfoto.no)

Green and Black Aurora Over Norway

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Post by Cloud Mon Mar 30, 2020 6:03 pm

Dragon wrote:

Pulsating aurora

These auroral lights are blinking patches of sky, up to hundreds of kilometers across, that rhythmically brighten and dim.


Absolutely stunning loving cupid


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