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 ...

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

Solar System Planets. Astronomy articles on the eight planets, plus the two dwarf planets, Pluto and Eris. Great pictures of everything in the solar system. Updated daily.