Venus is often referred to as Earth’s twin because of the similarities in size, composition, and proximity between the two planets. Both Venus and Earth have similar diameters and mass, leading to comparable surface gravity. However, their environmental conditions vary drastically. Venus has a thick, toxic atmosphere composed mainly of carbon dioxide, with clouds of sulfuric acid, resulting in extreme surface temperatures that can reach over 900 degrees Fahrenheit. In contrast, Earth supports life with a breathable atmosphere and suitable conditions. Despite their similarities, these stark differences highlight how even closely related planets can evolve under diverse circumstances.