Borealis 2000 - Photo gallery of aurora borealis, meteor showers, and planetary alignments hosted by photographer Dirk Obudzinski. Includes news and sky forecasts.
Kjell Henriksen Observatory - Optical observatory on Svalbard (Spitzbergen), associated with University of Alaska and University of Tromsø. Includes information about how to get there, data and observarions, and the history of the observatory.
Painted sky: the aurora - Image gallery of auroral photos from the ground, from space, and graphics related to aurora.
Poker Flat Research Range - Information for range users, real time data and images of aurora (only when it's dark in Alaska), and educational material on the aurora.
Rice Space Institute Outreach - Links to educational space weather pages, including the "Museums Teaching Planet Earth".
Saturn's Aurora - High quality Hubble Space Telescope images.
Secrets of the Polar Aurora - Detailed overview of the polar aurora, including where to see it, its causes, its relation to solar and interplanetary phenomena, the type of light, artificial auroras.
Sodankylä Geophysical Observatory - Observations and research related to northern lights, aeronomy, atmospheric chemistry, and related science.
Sondrestrom Research Facility - Auroral observatory with a large complement of instruments (including incoherent scatter radar) on the west coast of Greenland.
Tromsø Auroral Observatory - Articles about the Aurora and the Geomagnetic Field. [Norwegian, English, German]