How long does it take for the planet Neptune to rotate on its axis?


Quick Answer

The planet Neptune has an average rotational speed of just over 16 hours. Like the other gas giants, Neptune lacks a solid surface, and the speed at which different parts of the planet rotate can vary due to a process known as differential rotation.

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Full Answer

The equatorial regions of Neptune have a rotation speed that is slower than the planetary average. These regions take approximately 18 hours to complete a single rotation, while the polar region of the planet turns once every 12 hours. The difference in rotational speeds creates a strong latitudinal wind sheer effect, producing winds that can reach speeds of up to 1,500 mph.

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