Venus is the second planet from the Sun. It is often called Earth's "twin" or "sister" planet, being orbital neighbours as well as Venus having the most similar mass and size to Earth among the planets of the Solar System. While both are rocky planets, Venus has an atmosphere much thicker and denser than Earth and any other rocky body in the Solar System. It's atmosphere is composed of mostly carbon dioxide (CO2), with a global sulfuric acid cloud cover and no liquid water.
https://en.wikipedia.org/wiki/Venus