Travel through time to witness some of the most remarkable episodes in our solar system's history, uncovering its ancient ...

Is there a massive undiscovered planet on the outer reaches of the solar system? The idea has been around since before the discovery of Pluto in the 1930s. Labelled as Planet X, prominent astronomers ...

This article was originally published at The Conversation. The publication contributed the article to Space.com's Expert Voices: Op-Ed & Insights. The size of the solar system is defined by the volume ...

Discover the dramatic forces creating spectacular weather on neighboring planets and moons. Out in the solar system, the weather gets wacky – with globe-spanning dust storms, monsoons of liquid ...

Reaching interstellar space could be far simpler than we thought, thanks to a new idea called TARS, or "Torqued Accelerator ...

New research suggests that the planets in the Solar System may be acting as pacifiers for the Sun, subduing its activity. A ...