The planet known as the "Evening Star" is Venus. It earns this nickname because it often appears prominently in the western sky shortly after sunset, making it visible during twilight. Venus, with its reflective cloud cover, shines brightly compared to other celestial bodies, thus becoming easily recognizable. It can also appear in the morning sky, earning the title "Morning Star." Its proximity to Earth and brightness contribute to its long-standing cultural and scientific significance throughout history, encapsulating both beauty and intrigue among astronomers and skywatchers alike.