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

The newly discovered world — a "sednoid" — challenges what planetary scientists thought they knew about the edge of the solar ...

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

Is there a massive undiscovered planet on the outer reaches of the solar system? The idea has been around since before the ...

Scientists have been able to recreate the extreme conditions found on icy moons in deep space—and revealed the unstable ...

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 solar system consists of eight planets, several dwarf planets, hundreds of moons, and billions of asteroids, comets and ...

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

The future of our solar system has long captivated both scientists and stargazers alike. As highlighted in a recent Live ...

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.