A sequence of pictures taken by the IMAGE satellite of an aurora borealis sequence. From space, the aurora appear as a halo of light centered on the magnetic north and south poles. (Courtesy: IMAGE-FUV)
This image appears in the Technology Through Time article, #61: "What Causes An Auroral Storm?".
Earth's climate was seriously chilled during the Maunder Minimum (1645-1715) when no 11-year sunspot cycles were detected.