The Solar System, home to Earth and countless other fascinating planets and moons, exists within the Milky Way galaxy. But ...

The newly discovered world — a "sednoid" — challenges what planetary scientists thought they knew about the edge of the solar ...

The celestial body's unusual orbit “implies that something extraordinary occurred" in the early days of the solar system—and ...

The astronomers observed hot minerals just beginning to solidify – the first specks of planet-forming material, the ...

There’s a visitor in town, and its name is 3I/ATLAS. The presumed interstellar comet presents a rare opportunity for ...

Evidence that rocky planets beyond Jupiter formed as rapidly, and at the same time, as the inner planets could transform our ...

For Harold Kozak, one of life’s greatest pleasures is the opportunity to educate the public about the stars and the vast ...

The solar system consists of eight planets, several dwarf planets, hundreds of moons, and billions of asteroids, comets and ...

Astronomers witness first moments of planet formation as rock grains crystallize around distant star HOPS-315.

International astronomers have for the first time witnessed the birth of a planetary system beyond Earth's sun that could one ...

The star is surrounded by a protoplanetary disk, and this disk is the first evidence of debris condensing into what will ...