Posted on May 30, 2021

APOD: 2021 May 30 - Aurora over Clouds

Maj William W. 'Bill' Price

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Good Sunday morning, Rallypoint. Today's Astronomy Picture of the Day (APOD) is titled "Aurora over Clouds." Lenticular clouds all seem to have a UFO-shape to them, don't they? When coupled with an aurora, they truly do take on an alien form. This image was captured near Dyrholaey, Iceland in 2015. It was selected as an APOD on November 24th of that year.

APOD: 2021 May 30 - Aurora over Clouds

Posted from apod.nasa.gov

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LTC Stephen F.

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Aurora - Churchyard (Live on KEXP)

http://KEXP.ORG presents Aurora performing "Churchyard" live Kex Hostel in Reykjavik during Iceland Airwaves 2018. Recorded November 8, 2018.Hosts: Kevin Col...

Thank you my friend Maj William W. 'Bill' Price for posting the NASA Astronomy Picture of the Day (APOD) for Sunday, May 30, 2021 entitled "Aurora over Clouds."

Image: Aurora over Clouds - Image Credit & Copyright - Daniele Boffelli

APOD Background
"Explanation: Auroras usually occur high above the clouds. The auroral glow is created when fast-moving particles ejected from the Sun impact the Earth's magnetosphere, from which charged particles spiral along the Earth's magnetic field to strike atoms and molecules high in the Earth's atmosphere. An oxygen atom, for example, will glow in the green light commonly emitted by an aurora after being energized by such a collision. The lowest part of an aurora will typically occur about 100 kilometers up, while most clouds exist only below about 10 kilometers. The relative heights of clouds and auroras are shown clearly in the featured picture in 2015 from Dyrholaey, Iceland. There, a determined astrophotographer withstood high winds and initially overcast skies in an attempt to capture aurora over a picturesque lighthouse, only to take, by chance, the featured picture including elongated lenticular clouds, along the way."

Aurora - Churchyard (Live on KEXP)
https://www.youtube.com/watch?v=nJLuG8c11Gk

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LTC Stephen F.

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