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

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

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

There may be another world lurking between the orbital lines of our solar system. Astronomers in Japan have published their theory of an “Earth-like planet,” dubbed Planet Nine, that’s ...

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

“What we’ve been trying to do is find a baby version of our Solar System somewhere else,” Merel van ’t Hoff, an astronomer at ...

The Oort Cloud, an expanse of icy bodies in the far reaches of our solar system, is shown here in a scene from "Encounters in the Milky Way," a show at New York City's Hayden Planetarium that ...