How do scientists explain Neptune’s unusually strong winds?

Neptune is far from the Sun, so sunlight alone cannot explain the energy in its atmosphere. Like Jupiter, it emits more internal heat than it receives, and that heat helps power atmospheric motion. Combined with rapid rotation and different temperatures at various latitudes, this produces some of the fastest winds known on any planet. Voyager 2’s 1989 flyby helped reveal Neptune’s dynamic weather, including large storms and dark spots.