Venus is the planet known for having a greenhouse atmosphere. Its thick atmosphere is composed mainly of carbon dioxide, with clouds of sulfuric acid, creating an extreme greenhouse effect that traps heat. As a result, Venus has surface temperatures that can reach up to 900 degrees Fahrenheit (475 degrees Celsius), making it the hottest planet in our solar system. This unique atmospheric composition and the intense pressure on the surface contribute to Venus's reputation as a hostile environment for potential life.