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Aurora
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==== STEVE ==== In 2016, more than fifty [[citizen science]] observations described what was to them an unknown type of aurora which they named "[[Steve (atmospheric phenomenon)|STEVE]]", for "Strong Thermal Emission Velocity Enhancement". STEVE is not an aurora but is caused by a {{convert|25|km|mi|abbr=on}} wide ribbon of hot [[plasma (physics)|plasma]] at an altitude of {{convert|450|km|mi|abbr=on}}, with a temperature of {{convert|3000|C|K F|abbr=on}} and flowing at a speed of {{convert|6|km/s|mi/s|abbr=on}} (compared to {{convert|10|m/s|ft/s|abbr=on}} outside the ribbon).<ref>{{Cite news|url=https://phys.org/news/2018-08-kind-aurora.html|title=New kind of aurora is not an aurora at all|last=American Geophysical Union|date=20 August 2018|work=Phys.org|access-date=21 August 2018|archive-date=30 March 2022|archive-url=https://web.archive.org/web/20220330051224/https://phys.org/news/2018-08-kind-aurora.html|url-status=live}}</ref>
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