Photo by @babaktafreshi. A geomagnetic storm is underway tonight as Earth enters a stream of solar wind. For those of you in high latitudes bright auroras are now dancing around the Arctic Circle. Clear Skies! Of all the places I have photographed and filmed the lights in both hemispheres, #Iceland has been the favorite. Here a bright #aurora corona forms above an icewall, a frozen water cascade. @natgeocreative