The astronomical object known as the "Evening Star" is Venus. Often referred to by this name, Venus is prominently visible in the western sky shortly after sunset, making it one of the brightest objects in the night sky. It is often mistakenly thought to be a star due to its brightness, but it is actually a planet. Venus's thick atmosphere, composed mainly of carbon dioxide with clouds of sulfuric acid, contributes to its remarkable brightness and intense surface heat. Its position and luminosity in the sky have fascinated astronomers and stargazers throughout history.