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

In the time Pluto was found, classified as a planet and reclassified as a dwarf planet, it has not completed one orbit. One ...

Pluto may have been downgraded from full-planet status, but that doesn't mean it doesn't hold a special place in scientist's ...

Astronomers have been curious about the makeup of Ceres, the largest object in the asteroid belt, ever since its discovery by ...

Recent data from the James Webb Space Telescope (JWST) suggests that a planet orbiting a small, red star 35 light years away ...

The solar system has nine planets, but in 2006 the International Astronomical Union declared Pluto a dwarf planet, making the ...

A distant white dwarf hosts an Earth-like planet in an orbit that might be similar to Earth’s if it survives the Sun’s red giant phase.

Within GRAVITY’s combined observations, Xuan’s team discovered that Gliese 229 B was not a single object, but a pair of brown ...

Today will be a day of professional focus and opportunities, with heightened instincts and a chance to reflect on career and ...

The new season's forecast is frightening, and we should all take a cue from Sagittarius on how to respond. Read our queer ...

By probing chemical processes observed in the Earth's hot mantle, Cornell scientists have started developing a library of ...

One nearby M-dwarf, TRAPPIST-1, is about 40 light-years away ... and cooling over hundreds of millions of years into a solid terrestrial planet. Results showed that hydrogen or other light gases did ...