by APOD Robot » Sun Apr 21, 2019 4:06 am
Spiral Aurora over Icelandic Divide
Explanation: Admire the beauty but fear the beast. The beauty is the
aurora overhead, here taking the form of great green
spiral, seen between picturesque clouds with the bright Moon to the side and stars in the background. The beast is the wave of charged particles that creates the
aurora but might, one day, impair civilization. In 1859, following notable auroras seen all across the globe, a pulse of charged particles from a
coronal mass ejection (CME) associated with a
solar flare impacted Earth's
magnetosphere so forcefully that they created the
Carrington Event. A relatively direct path between the Sun and the Earth might have been cleared by a preceding
CME. What is sure is that the Carrington Event compressed the
Earth's magnetic field so violently that
currents were created in telegraph wires so great that many wires sparked and gave
telegraph operators shocks. Were a
Carrington-class event to impact the Earth today, speculation holds that
damage might occur to global power grids and electronics on a scale never yet experienced. The featured aurora was imaged in 2016 over
Thingvallavatn Lake in
Iceland, a lake that partly fills a fault that
divides Earth's large Eurasian and North American
tectonic plates.
[url=https://apod.nasa.gov/apod/ap190421.html] [img]https://apod.nasa.gov/apod/calendar/S_190421.jpg[/img] [size=150]Spiral Aurora over Icelandic Divide[/size][/url]
[b] Explanation: [/b] Admire the beauty but fear the beast. The beauty is the [url=https://apod.nasa.gov/apod/ap120430.html]aurora overhead[/url], here taking the form of great green [url=https://originalbeauty.wordpress.com/2009/06/27/spirals-in-nature/]spiral[/url], seen between picturesque clouds with the bright Moon to the side and stars in the background. The beast is the wave of charged particles that creates the [url=https://apod.nasa.gov/apod/ap960527.html]aurora[/url] but might, one day, impair civilization. In 1859, following notable auroras seen all across the globe, a pulse of charged particles from a [url=http://solarscience.msfc.nasa.gov/CMEs.shtml]coronal mass ejection[/url] (CME) associated with a [url=https://apod.nasa.gov/apod/ap031029.html]solar flare[/url] impacted Earth's [url=https://science.nasa.gov/heliophysics/focus-areas/magnetosphere-ionosphere]magnetosphere[/url] so forcefully that they created the [url=https://en.wikipedia.org/wiki/Solar_storm_of_1859]Carrington Event[/url]. A relatively direct path between the Sun and the Earth might have been cleared by a preceding [url=https://apod.nasa.gov/apod/ap160110.html]CME[/url]. What is sure is that the Carrington Event compressed the [url=http://www.nasa.gov/mission_pages/sunearth/news/gallery/Earths-magneticfieldlines-dipole.html]Earth's magnetic field[/url] so violently that [url=https://en.wikipedia.org/wiki/Faraday%27s_law_of_induction]currents were created[/url] in telegraph wires so great that many wires sparked and gave [url=https://en.wikipedia.org/wiki/Telegraphy#Electrical_telegraphs]telegraph[/url] operators shocks. Were a [url=http://science.nasa.gov/science-news/science-at-nasa/2014/02may_superstorm/]Carrington-class[/url] event to impact the Earth today, speculation holds that [url=http://news.nationalgeographic.com/news/2011/03/110302-solar-flares-sun-storms-earth-danger-carrington-event-science/]damage might occur[/url] to global power grids and electronics on a scale never yet experienced. The featured aurora was imaged in 2016 over [url=https://en.wikipedia.org/wiki/%C3%9Eingvallavatn]Thingvallavatn[/url] Lake in [url=https://en.wikipedia.org/wiki/Iceland]Iceland[/url], a lake that partly fills a fault that [url=https://www.youtube.com/watch?v=Bhu2umi0QII]divides[/url] Earth's large Eurasian and North American [url=http://www.worldatlas.com/aatlas/infopage/tectonic.gif]tectonic plates[/url].
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