When you buy through links on our articles, Future and its syndication partners may earn a commission.A bright ribbon of auroras shining over the Denmark Straight and Iceland. | Credit: NASA Earth Observatory images by Michala Garrison, using VIIRS day-night band data from the Suomi National Polar-Orbiting Partnership.A minor geomagnetic storm painted the night skies over Iceland and eastern Canada with glowing ribbons of aurora on Feb. 16, 2026, and one eagle-eyed satellite spotted the show from above.These striking nighttime views were captured by the Visible Infrared Imaging Radiometer Suite (VIIRS) on the Suomi NPP satellite, a joint mission between NASA and the National Oceanic and Atmospheric Administration (NOAA).What is it?The images show the northern lights shimmering over the Denmark Strait and across parts of Canada during a minor (G1) geomagnetic storm. On a five-level scale that tops out at G5 (severe), G1 is the weaker of the geomagnetic storms but can still produce vivid auroras at high latitudes if the conditions are right.Auroras dancing above the Canadian provinces of Québec and Newfoundland and Labrador. | Credit: NASA Earth Observatory images by Michala Garrison, using VIIRS day-night band data from the Suomi National Polar-Orbiting Partnership.Geomagnetic storms arise when incoming charged particles from the sun — from fast solar wind or coronal mass ejections (CMEs) hit Earth’s magnetic field, causing a temporary disturbance in Earth’s magnetosphere. During such storms, the energetic particles are funneled toward the poles via Earth’s magnetic field lines, where they then collide with gases in the upper atmosphere and release energy in the form of light, giving us auroras.AdvertisementAdvertisementThough this satellite imagery is in grayscale, lucky skywatchers on the ground would have likely seen curtains of green light with possible magentas and reds rippling overhead.The color of auroras is caused by the gases in the atmosphere that the energetic particles collide with. Green is the most common color (and the most easily spotted with our eyes), and is caused when particles collide with oxygen molecules at a height of around 60 to 90 miles (100 to 300 kilometers). Red auroras occur when solar part …
