Today, we know of more than 5,000 exoplanets: planets outside our solar system that orbit other stars. While the effort to ...

It must have cleared all other celestial bodies, except its own moons, from its orbit.

After a decade-long search, some scientists say a growing number of clues point to the existence of a hidden planet in the Kuiper Belt beyond Neptune — and they may soon have the opportunity to find ...

"The Voyager 2 flyby of Uranus in 1986 revealed an unusually oblique and off-centred magnetic field," the researchers wrote.

The movements of the planets in the Solar System are pretty difficult to get your head around, even before we get started on ...

We're showing that, everywhere we look now, there was some sort of magnetic field that was responsible for bringing mass to ...

Mercury is the smallest planet in our solar system. It is the closest to the Sun and has extreme temperature changes between ...

Longer observations of this and other systems ... our chances of finding regular communications among planets beyond our solar system, if they exist,” said Nick Tusay, first author of the ...

We’re showing that, everywhere we look now, there was some sort of magnetic field that was responsible for bringing mass to ...

A Southwest Research Institute-led team combined compositional data of primitive bodies like Kuiper Belt objects, asteroids ...

Other theories propose that the anomalies ... Finding a smaller planet would also spark excitement, Rice added, because every solar system planet is immensely useful for extrapolating information ...