Here's why:

* Thick Atmosphere: Venus has a very thick atmosphere, composed primarily of carbon dioxide. This atmosphere traps heat, making Venus the hottest planet in our solar system.

* Sulfuric Acid Clouds: The clouds that cover Venus are made of sulfuric acid, which reflects sunlight and gives the planet its bright appearance.

* Dense and Opaque: The clouds are so dense and opaque that they block almost all sunlight from reaching the surface, making it impossible to see through them with visible light.

Therefore, the nickname "Cloudy Planet" accurately describes Venus's atmospheric conditions.