For some time, astronomers have theorized that there is a connection between planetary mass and rotation. In the solar system ...

In the future, this feature could be used to shed light on chemistry and even the birth of planetary systems.

Add Yahoo as a preferred source to see more of our stories on Google. Study suggests moons orbiting rogue planets could host liquid oceans for billions of years using tidal heating and hydrogen ...

Learn how winds in Saturn's upper atmosphere power a continuous aurora, creating misleading changes in the planet's rotation rate.

The largest survey of exoplanets using an observatory atop Mauna Kea on the Big Island confirms a long-predicted relationship ...

For decades, scientists have been puzzled by a strange observation about Saturn. Depending on how it was measured, the planet seemed to spin at slightly different speeds. This didn’t make sense, ...

Astronomers using NASA’s Hubble Space Telescope have measured the rotation rate of an extreme exoplanet by observing the varied brightness in its atmosphere. This is the first measurement of the ...

Data from NASA landers showed that Mars's spin is speeding up. According to a new study, a gravity anomaly 1,200 kilometers ...

Earth is the planet we have the best opportunity to understand in detail—helping us see how other rocky planets behave, even ...