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

"It is possible that a planet once existed in the solar system but was later ejected, causing the unusual orbits we see today ...

CAPE CANAVERAL, Fla. — Astronomers have discovered the earliest seeds of rocky planets forming in the gas around a baby ...

Astronomers have discovered the earliest seeds of rocky planets forming around a baby sun-like star. They reported Wednesday ...

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

Previously, astronomers have observed giant planets, like Jupiter, forming in the giant discs around young stars. According ...

This artist’s concept depicts one of the solar system’s inner planets slamming into Earth after being nudged on a collision course by a passing star. Such a world-shattering cataclysm is ...

(CNN) — A newly discovered object speeding through our solar system is sparking excitement among astronomers because it’s not from around here. Believed to be a comet, the object is only the ...