Pluto isn't alone—it's part of the Kuiper Belt with possibly hundreds of other planet-sized objects. Because Pluto hasn't achieved gravitational dominance in its region, the International Astronomical ...

By tracing the corkscrew wobble of two stars as they move through the sky, the Gaia space mission has discovered one new giant "planet," plus a new brown dwarf.

Samples from asteroid Bennu have delivered insights into the origins of Earth’s water and the organic molecules that may have ...

SETI normally listens for extraterrestrial signals. A SETI team has switched roles and considered where aliens can hear us ...

When we first began searching for planets around other stars, one of the surprising discoveries was that there are planets orbiting white dwarfs. The first exoplanets we ever discovered were white ...

Gaia-4b is considered a super-Jupiter planet, a relatively cold gas giant, orbiting its star over 570 Earth-days. That star ...

Using the Keck Planet Imager and Characterizer (KPIC), astronomers have performed high-resolution spectroscopic observations ...

The planet, if it is indeed a planet ... an unremarkable orange K-class dwarf with just 64% the mass of our sun. As Gaia plotted the star's proper motion in the sky, it noticed that the star's ...

We know almost nothing about M-dwarf compositions, SAKHMET team leader Hinkel, told me via email. Given that M-dwarfs are fantastic places to observe small, earth-sized planets; it's important for ...

Temperamental' stars that brighten and dim over a matter of hours or days may be distorting our view of thousands of distant planets, suggests a new study.

Five of the brightest planets will be visible to the naked eye. With help, you may even spot Uranus and Neptune.