Detecting exoplanets is one thing, but imaging them is another thing entirely. Astronomers can detect them by the way they ...

The exo-planets are larger than the Earth but smaller than Neptune. The planets are in a little-understood class called sub-Neptunes, commonly found orbiting sun-like stars in the Milky Way.

NASA’S James Webb Space Telescope has captured direct images of a planet outside of our solar system, which is the first time ...

A team of astronomers believe they may have discovered a new dwarf planet—just like Pluto—on the edge of our solar system. The object—which orbits out beyond Neptune—has been named "2017 OF201" by the ...

A 9th planet in our solar system might be found — and no, it’s not Pluto. Is there another planet out there? Researchers say they have hints of a new candidate. Julia Musto. in New York.

Our solar system may have a ninth planet after all, following the declassification of Pluto nearly two decades ago, researchers say. ABC News. Video. Live. Shows. Shop. Log In. Stream on.

This process, called accretion, is how everything in the solar system – planets, moons, comets and asteroids – came into being. Telescopes can see young solar systems being born.

The exo-planets are larger than the Earth but smaller than Neptune. The planets are in a little-understood class called sub-Neptunes, commonly found orbiting sun-like stars in the Milky Way.

The exo-planets are larger than the Earth but smaller than Neptune. The planets are in a little-understood class called sub-Neptunes, commonly found orbiting sun-like stars in the Milky Way.