Which planet has the longest rotation period of all the planets?

Venus has the longest rotation period of all the planets in our solar system, taking about 243 Earth days to complete one full rotation on its axis. This rotation is particularly unique because it is slower than its orbital period, which is about 225 Earth days. As a result, a day on Venus (the time it takes for the planet to rotate once) is longer than a year on Venus (the time it takes to orbit the Sun).

The slow rotation of Venus affects various aspects of its atmosphere and climate, leading to extreme heat and thick clouds of sulfuric acid. This distinctive rotation is also retrograde, meaning that it rotates in the opposite direction to most planets, including Earth. Understanding the rotation of planets is essential in planetary science, as it influences weather patterns, temperatures, and the magnetic fields of the planets.