by APOD Robot » Mon Apr 04, 2022 4:08 am
A Vortex Aurora over Iceland
Explanation: No, the car was not in danger of being vacuumed into space by the big sky vortex. For one reason, the vortex was really an
aurora, and since auroras are created by particles striking the Earth from space, they do not create a
vacuum. This rapidly
developing auroral display was caused by a
Coronal Mass Ejection from the Sun that passed by the Earth closely enough to cause a ripple in
Earth's magnetosphere. The
upper red parts of the aurora occur over 250 kilometers high with its red
glow created by atmospheric atomic oxygen directly energized by incoming particles. The
lower green parts of the
aurora occur over 100 kilometers high with its green
glow created by atmospheric
atomic oxygen energized indirectly by collisions with first-energized
molecular nitrogen. Below 100 kilometers, there is little atomic oxygen, which is why auroras end abruptly. The
concentric cylinders depict a
dramatic auroral
corona as seen from the side. The featured image was created from a single 3-second exposure taken in mid-March over
Lake Myvatn in
Iceland.
[url=https://apod.nasa.gov/apod/ap220404.html] [img]https://apod.nasa.gov/apod/calendar/S_220404.jpg[/img] [size=150]A Vortex Aurora over Iceland[/size][/url]
[b] Explanation: [/b] No, the car was not in danger of being vacuumed into space by the big sky vortex. For one reason, the vortex was really an [url=https://spaceplace.nasa.gov/aurora/en/]aurora[/url], and since auroras are created by particles striking the Earth from space, they do not create a [url=https://www.nasa.gov/offices/setmo/facilities/thermal_vacuum_chamber_a]vacuum[/url]. This rapidly [url=https://spaceweather.com/archive.php?view=1&day=20&month=03&year=2022]developing auroral[/url] display was caused by a [url=https://www.nasa.gov/content/goddard/what-is-a-coronal-mass-ejection]Coronal Mass Ejection[/url] from the Sun that passed by the Earth closely enough to cause a ripple in [url=https://www.nasa.gov/magnetosphere]Earth's magnetosphere[/url]. The [url=https://apod.nasa.gov/apod/ap220220.html]upper red[/url] parts of the aurora occur over 250 kilometers high with its red [url=https://aurora.live/2020/04/aurora-borealis-colors-explained/]glow created[/url] by atmospheric atomic oxygen directly energized by incoming particles. The [url=https://apod.nasa.gov/apod/ap210114.html]lower green[/url] parts of the [url=https://svs.gsfc.nasa.gov/4934]aurora[/url] occur over 100 kilometers high with its green [url=https://en.wikipedia.org/wiki/Aurora#Colors_and_wavelengths_of_auroral_light]glow created[/url] by atmospheric [url=https://manoa.hawaii.edu/exploringourfluidearth/chemical/chemistry-and-seawater/atoms-and-molecules]atomic[/url] oxygen energized indirectly by collisions with first-energized [url=https://en.wikipedia.org/wiki/Molecule]molecular[/url] nitrogen. Below 100 kilometers, there is little atomic oxygen, which is why auroras end abruptly. The [url=https://mathworld.wolfram.com/ConcentricCircles.html]concentric[/url] [url=https://en.wikipedia.org/wiki/Cylinder]cylinder[/url]s depict a [url=https://img.huffingtonpost.com/asset/5bad12683c000032000b0e42.jpeg?ops=scalefit_720_noupscale]dramatic[/url] auroral [url=https://apod.nasa.gov/apod/ap141014.html]corona[/url] as seen from the side. The featured image was created from a single 3-second exposure taken in mid-March over [url=https://youtu.be/kgQaU1of50Q]Lake Myvat[/url][url=https://en.wikipedia.org/wiki/M%C3%BDvatn]n[/url] in [url=https://en.wikipedia.org/wiki/Iceland]Iceland[/url].
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