| Category | Details | |-------------------------|-----------------------------------------------------------------------------|| | Rotation Direction | Venus exhibits retrograde rotation, opposite to most planets. | | Rotation Period | Venus takes 243 Earth days to complete one rotation (one day). | | Orbital Period | Venus takes 225 Earth days to orbit the Sun (one year). || | Angular Momentum | Conservation of angular momentum caused planets to inherit a shared spin direction.|| | Theories on Venus' Spin| Two main theories: massive collision or atmospheric effects slowed and reversed its spin.| | Venus Characteristics| - Nearly the same size as Earth. | | | - Hottest planet with temperatures around 470°C. | | | - Air pressure 90 times stronger than Earth's. | | | - Covered in thick clouds of sulphuric acid. | | | - Most volcanoes of any planet. | | | - No moons, like Mercury. | | | - Second brightest object in the night sky after the Moon. | | | - Winds in its upper atmosphere circle the planet in four days. |