Half life portal storm1/31/2023 ![]() ![]() ![]() ![]() ![]() Harder to see is the purple aurora seen later in the video, this time created as energetic particles strike 'ionic' nitrogen in Earth's atmosphere. This typically occurs at around 120–180 kilometers from Earth's surface.Īs we humans have evolved to be very adept at seeing different shades of green, it's the most predominant color we see. The video, running in half-speed to accentuate the beautiful auroral motion, starts with a mass of green, swirling structures, created when energetic particles in the solar wind collide with oxygen in Earth's atmosphere, which then, 'excited' gives off light in the green range of the electromagnetic spectrum. The goal of such cameras is to view as much as the sky as possible, so they are fitted with a 'fish-eye' lens to see horizon to horizon when pointed straight up. This stunning video was created from images taken every minute during this recent period of intense auroral activity in the early hours of 12 October, by an all-sky camera in Kiruna, Sweden-part of ESA's Space Weather Service Network. While most of the solar wind is blocked by Earth's protective magnetosphere, some charged particles become trapped in Earth's magnetic field and flow down to the geomagnetic poles, colliding with the upper atmosphere to create the beautiful Aurora. CMEs explode from the sun, rush through the Solar System and while doing so speed up the solar wind-a stream of charged particles continuously released from the sun's upper atmosphere. ![]()
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