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 ).
Space: 1889
Beneath a constant shroud of clouds, Venus is a swamp world drenched by nearly continuous rainfall. Much of the surface is covered by a shallow ocean that averages less than ten feet deep. The plants are similar to those of the Mesozoic age of Earth, and dinosaurs roam the jungles.