A planet's year length depends on its distance from the Sun. Planets closer to the Sun have shorter years. A planet's rotation speed is unrelated to its year length. Planets' orbital speeds vary ...

Data from the European Space Agency's Gaia mission has enabled the creation of a detailed catalog of asteroid rotations ...

The rotation rates of giant planets (Jupiter, Saturn, Uranus, Neptune) are significantly faster than those of terrestrial planets (Mercury, Venus, Earth, Mars). Determining the rotation rates of giant ...

Using new data from NASA’s Cassini spacecraft, researchers believe they have solved a longstanding mystery of solar system science: the length of a day on Saturn. It’s 10 hours, 33 minutes and 38 ...

A new study confirms that Earth's inner core has been rotating more slowly than usual since 2010. This mysterious "backtracking" could also end up slightly altering the planet's overall rotation, ...

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 ...

One day in the next couple of years, everyone in the world will lose a second of their time. Exactly when that will happen is being influenced by humans, according to a new study, as melting polar ice ...

Our planet may have had a recent change of heart. Earth’s inner core may have temporarily stopped rotating relative to the mantle and surface, researchers report in the January 23 Nature Geoscience.

CAPE CANAVERAL, Fla. (AP) - A day at Uranus just got a little longer. Scientists reported Monday that observations by the Hubble Space Telescope have confirmed it takes Uranus 17 hours, 14 minutes and ...

James is a published author with multiple pop-history and science books to his name. He specializes in history, space, strange science, and anything out of the ordinary.View full profile James is a ...

Photometry from Kepler has revealed the presence of cool starspots on the surfaces of thousands of stars, presenting a wide range of spot morphologies and lifetimes. Understanding the lifetime and ...

Caltech researchers have developed a new simulation of the hydrological cycle on Jupiter, modeling how water vapor condenses into clouds and falls as rain throughout the giant planet's swirled, ...