The Evening Star, commonly known as Venus, is the second planet from the Sun in our solar system. It is often visible shortly after sunset, which is why it is called the Evening Star. Venus is similar in size and composition to Earth, earning it the nickname "Earth's twin." However, its thick atmosphere is primarily composed of carbon dioxide, leading to extreme greenhouse gas effects and surface temperatures hot enough to melt lead. Venus has a bright appearance due to its reflective cloud cover, making it one of the brightest objects in the night sky. It orbits the Sun every 225 Earth days and rotates on its axis very slowly, taking about 243 Earth days to complete one rotation. This unique rotation results in a day on Venus being longer than its year.