by APOD Robot » Sun May 31, 2020 4:05 am
Aurora over Sweden
Explanation: It was bright and green and stretched across the sky. This striking aurora display was captured in 2016 just outside of
Östersund,
Sweden. Six photographic fields were merged to create the featured panorama spanning almost 180 degrees. Particularly striking aspects of this
aurora include its sweeping arc-like shape and its stark definition.
Lake Storsjön is seen in the foreground, while several familiar constellations and the star
Polaris are visible through the aurora, far in the background. Coincidently, the
aurora appears to avoid the Moon visible on the lower left. The aurora appeared a
day after a
large hole opened in the
Sun's corona allowing particularly energetic particles to flow out into the
Solar System. The
green color of the aurora is caused by
oxygen atoms recombining with ambient
electrons high in the
Earth's atmosphere.
[url=https://apod.nasa.gov/apod/ap200531.html] [img]https://apod.nasa.gov/apod/calendar/S_200531.jpg[/img] [size=150]Aurora over Sweden[/size][/url]
[b] Explanation: [/b] It was bright and green and stretched across the sky. This striking aurora display was captured in 2016 just outside of [url=https://en.wikipedia.org/wiki/%C3%96stersund]Östersund[/url], [url=https://en.wikipedia.org/wiki/Sweden]Sweden[/url]. Six photographic fields were merged to create the featured panorama spanning almost 180 degrees. Particularly striking aspects of this [url=https://spaceplace.nasa.gov/aurora/en/]aurora[/url] include its sweeping arc-like shape and its stark definition. [url=https://en.wikipedia.org/wiki/Storsj%C3%B6n]Lake[/url] [url=https://www.youtube.com/watch?v=1KqryCRpT_s]Storsjön[/url] is seen in the foreground, while several familiar constellations and the star [url=https://apod.nasa.gov/apod/ap150602.html]Polaris[/url] are visible through the aurora, far in the background. Coincidently, the [url=https://www.youtube.com/watch?v=rMfUVfjHnKc]aurora[/url] appears to avoid the Moon visible on the lower left. The aurora appeared a [url=https://spaceweather.com/archive.php?view=1&day=12&month=04&year=2016]day after[/url] a [url=https://solarscience.msfc.nasa.gov/feature3.shtml]large hole[/url] opened in the [url=https://apod.nasa.gov/apod/ap170920.html]Sun's corona[/url] allowing particularly energetic particles to flow out into the [url=https://apod.nasa.gov/apod/ap190520.html]Solar System[/url]. The [url=http://www.webexhibits.org/causesofcolor/4D.html]green color of the aurora[/url] is caused by [url=https://www.chemicool.com/elements/oxygen.html]oxygen[/url] atoms recombining with ambient [url=https://www-spof.gsfc.nasa.gov/Education/whelect.html]electrons[/url] high in the [url=https://www.nasa.gov/mission_pages/sunearth/science/atmosphere-layers2.html]Earth's atmosphere[/url].
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