Venus embrace1/9/2023 ![]() ![]() Consequently, it takes longer to rotate about its axis than any other planet in the Solar System, and does so in the opposite direction to all but Uranus. Venus orbits the Sun every 224.7 Earth days, but rotates around its axis in 243 Earth days. At roughly 50 km above the surface atmospheric conditions reach Earth-like temperatures and levels of pressure. The water has probably photodissociated, and the free hydrogen has been swept into interplanetary space by the solar wind because of the lack of an internally induced magnetic field. ![]() It may have had water oceans in the past, but after these evaporated the temperature rose under a runaway greenhouse effect. Venus is shrouded by an opaque layer of highly reflective clouds of sulfuric acid, preventing its surface from being seen from Earth in light. Even though Mercury is closer to the Sun, Venus has the hottest surface of any planet in the Solar System, with a mean temperature of 737 K (464 ☌ 867 ☏). The atmospheric pressure at the planet's surface is about 92 times the sea level pressure of Earth, or roughly the pressure at 900 m (3,000 ft) underwater on Earth. The carbon dioxide atmosphere of Venus is the densest of the four terrestrial planets. Venus is the second largest terrestrial object of the Solar System, with a surface gravity minimally lower than on Earth, but having only an induced magnetosphere. After the Moon, Venus it is the brightest natural object in Earth's sky, capable of casting visible shadows on Earth at dark conditions and being visible to the naked eye in broad sunlight. Since Venus is orbiting relatively close to Earth with a synodic period of 1.6 years it can achieve a maximal elongation of 47° to the Sun, allowing it to appear for up to a few hours after sunset and before sunrise in a completely dark sky. Venus, like Mercury, appears in Earth's sky relatively close to the Sun either as morning star or evening star, resulting from them orbiting the Sun inside of Earth's orbit. It is sometimes called Earth's "sister" or "twin" planet as Venus is almost as large and with a similar composition. Venus is the second planet from the Sun, orbiting it the closest to Earth. Following the right-hand rule for prograde rotation puts Ishtar Terra in the southern hemisphere and makes the axial tilt 177.36°.
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