# Venus is the brightest planet in the solar system and is the third brightest object visible from earth after the sun and the moon. # It is the brightest among planets because it has the highest albedo due to the highly reflective sulfuric acid that covers its atmosphere. It is sometimes visible to the naked eye in broad daylight. # Venus is sometimes called Earth’s sister planet or Earth’s twin because of their similar size, mass, proximity to the Sun, bulk composition and presence of similar physical features such as high plateaus, folded mountain belts, numerous volcanoes, etc. # It is radically different from Earth in other respects. The surface of Venus is totally obscured by a thick atmosphere composed of about 96% carbon dioxide, covered with clouds of highly reflective sulfuric acid. # It has the densest atmosphere of the four terrestrial planets. The atmospheric pressure at the planet’s surface is 92 times that of Earth, or roughly the pressure found 900 m (3,000 ft) underwater on Earth. # Venus is by far the hottest planet in the Solar System, even though Mercury is closer to the Sun. # This is because of the greenhouse effect arising from high concentrations of CO2 and thick atmosphere. # A day on Venus is equivalent to 243 earth days and lasts longer than its year (224 days). It rotates in the opposite direction (clockwise) to most other planets. # In the ancient literature, Venus was often referred to as the morning star and evening star.