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 ...

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

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

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

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

The bold question-askers at What If explore whether our Solar System could survive if it ended up orbiting a black hole.

The solar system consists of eight planets, several dwarf planets, hundreds of moons, and billions of asteroids, comets and meteoroids. The exact boundaries of the solar system ar ...

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

The world's first hybrid solar cargo ship has just launched in Germany, marking a major milestone for sustainable shipping.

The Sun is a powerful, awe-inspiring force at the center of our solar system. Its brilliance lights up our sky and sustains ...

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