In the 1980s, Voyager 2 discovered a dark storm in Neptune's dense atmosphere, and now the Hubble Space Telescope is tracking Neptune's storms. More in this NASA video.
Geir-Inge Buschmann - a nature photographer in Tromsø, Norway - wrote, "We're enjoying cold clear nights, with some fine northern lights. Last night we went out to Oldervika outside Tromsø, and had some fun with our headlamps."