Colonization of Venus
Venus's atmosphere is made mostly out of carbon dioxide, which, after filtering from sulfuric acid, can be used to grow food. Because nitrogen and oxygen are lighter than the carbon-dioxide that makes the atmosphere, breathable-air-filled balloons will float at a height of about . At this height, the temperature is a manageable ; or if we could get higher (see ).
Extraterrestrial vortex
Venus has two large long-lived pairs of inverted anticyclones, one pair near each pole (polar vortices), discovered in 2006 by the Venus Express probe. Venus's southern pole vortex is the size of Europe and starts at the lower clouds of its atmosphere (42 kilometers from the surface) to the upper clouds of the atmosphere (63 kilometers from the surface). The vortex's elements are constantly being broken apart and coming back together as the vortex circles every 2.2 days. "The vortex is never destroyed, but it evolves continuously between morphologies" or shapes, Garate-Lopez said. Two centers of rotation of the 12-mile-high (20 kilometers) storm, which exist at different altitudes, rarely ever line up.