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 ...

Analysis of an ancient meteorite suggests that rocky planets both near and distant from the sun may have formed at the same ...

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

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

A mysterious object the size of Manhattan is blazing through our solar system, and its origins remain a puzzle to the world's ...

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

Astronomers have discovered an object at the edge of the solar system that is locked in a strange rhythmic dance with the ice ...

KQ14, nicknamed "Ammonite", was discovered using the Subaru Telescope and is a highly elliptical object with a perihelion and ...

Typically, telescopes are synonymous with bringing far-off objects close, but the newest member of the solar system was ...

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

Astronomers first identified these minerals using the now-three-year-old James Webb Space Telescope. To see where exactly the ...