The rotation periods of Jupiter, Saturn, Uranus, and Neptune range from roughly 10 to 17 hours. Estimating giant planets’ rotation rates, however, is not easy. Because they don’t have solid surfaces, ...

For years, scientists have been unable to agree on the length of a day on Venus, but one new study might put an end to this confusion. The planet Venus rotates very slowly, with a single revolution ...

The rotation of the planet Venus is slowing down, according to recent data gathered by the European Space Agency's Venus Express satellite. Peering through the planet's dense atmosphere with infrared ...

Not long after Neptune completed its first orbit around the sun since its discovery in 1846, scientists have managed to calculate the exact length of one day on the distant gas giant planet. Unlike ...

Climate change is causing widespread global impacts, but now scientists are finding that it's altering the very planet itself. Earth's rotation is slowing down, extending the length of a day ever so ...