Venus, often referred to as Earth’s twin due to its similar size and composition, has an atmosphere thick with carbon dioxide and clouds of sulfuric acid. The planet is the hottest in the solar system, with surface temperatures averaging around 465°C (869°F), hot enough to melt lead. Venus also has a runaway greenhouse effect, which traps heat and makes the planet uninhabitable. It takes 225 Earth days to orbit the Sun, but its rotation is very slow, taking 243 Earth days to complete one full...