by APOD Robot » Sun Mar 14, 2021 5:05 am
A Flag Shaped Aurora over Sweden
Explanation: It appeared, momentarily, like a 50-km tall banded flag. In mid-March of 2015, an energetic
Coronal Mass Ejection directed toward a clear magnetic channel to Earth led to one of the more intense
geomagnetic storms of recent years. A
visual result was wide spread
auroras being seen over many countries near
Earth's magnetic poles. Captured over
Kiruna,
Sweden, the
image features an unusually straight
auroral curtain with the
green color emitted low in the
Earth's atmosphere, and red many kilometers higher up. It is unclear where the rare
purple aurora originates, but it might involve an unusual
blue aurora at an even lower altitude than the green, seen superposed with a much higher red. Now past
Solar Minimum, colorful
nights of auroras over Earth are likely to increase.
[url=https://apod.nasa.gov/apod/ap210314.html] [img]https://apod.nasa.gov/apod/calendar/S_210314.jpg[/img] [size=150]A Flag Shaped Aurora over Sweden[/size][/url]
[b] Explanation: [/b] It appeared, momentarily, like a 50-km tall banded flag. In mid-March of 2015, an energetic [url=http://solarscience.msfc.nasa.gov/CMEs.shtml]Coronal Mass Ejection[/url] directed toward a clear magnetic channel to Earth led to one of the more intense [url=https://www.nasa.gov/mission_pages/sunearth/news/storms-on-sun.html]geomagnetic storms[/url] of recent years. A [url=http://spaceweather.com/archive.php?view=1&day=18&month=03&year=2015]visual result[/url] was wide spread [url=https://apod.nasa.gov/apod/ap150319.html]auroras being seen[/url] over many countries near [url=https://apod.nasa.gov/apod/ap040919.html]Earth's magnetic poles[/url]. Captured over [url=https://youtu.be/b3vaaNE1XyM]Kiruna[/url], [url=https://en.wikipedia.org/wiki/Sweden]Sweden[/url], the [url=https://www.instagram.com/p/BTmEEF5AtOR/]image features[/url] an unusually straight [url=https://apod.nasa.gov/apod/ap960619.html]auroral curtain[/url] with the [url=http://www.webexhibits.org/causesofcolor/4D.html]green color[/url] emitted low in the [url=http://en.wikipedia.org/wiki/Atmosphere_of_Earth#/media/File:Earth%27s_atmosphere.svg]Earth's atmosphere[/url], and red many kilometers higher up. It is unclear where the rare [url=https://apod.nasa.gov/apod/ap141014.html]purple aurora[/url] originates, but it might involve an unusual [url=https://en.wikipedia.org/wiki/Aurora#Visual_forms_and_colors]blue aurora[/url] at an even lower altitude than the green, seen superposed with a much higher red. Now past [url=https://www.nasa.gov/mission_pages/sunearth/news/solarmin-max.html]Solar Minimum[/url], colorful [url=https://apod.nasa.gov/apod/ap141103.html]nights[/url] [url=https://apod.nasa.gov/apod/ap140714.html]of[/url] [url=https://apod.nasa.gov/apod/ap110517.html]auroras[/url] over Earth are likely to increase.
[table][tr][td=left][url=http://asterisk.apod.com/discuss_apod.php?date=210313][b]<< Previous APOD[/b][/url][/td] [td=center][url=http://asterisk.apod.com/view_retro.php?date=0314][b]This Day in APOD[/b][/url][/td] [td=right][url=http://asterisk.apod.com/discuss_apod.php?date=210315][b]Next APOD >>[/b][/url][/td][/tr][/table]