Number 139 (Story #2), August 10, 1993 by Phillip F. Schewe and Ben Stein URANUS IS NOT A FEATURELESS BALL . Astronomers at the Multiple Mirror Telescope in Arizona took pictures of Uranus at several infrared wavelengths (1.2, 1.6, and 2.2 microns) and saw what the Voyager spacecraft missed (at visible wavelengths) on its 1986 flyby: a faintly dark spot south of the equator, as well as some other features near the pole. (Sky & Telescope, Sept. 1993.)