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

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

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 answers to those questions depend on how we define the death of the solar system.

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

Astronomers have discovered the earliest seeds of planets forming around HOPS-315, a baby star located 1,300 light-years away ...

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

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

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

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