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 ...

Astronomers have uncovered a massive new trans-Neptunian object, 2017 OF201, lurking at the edge of our solar system. With an orbit stretching 25,000 years and a size that may qualify it as a dwarf ...

NASA’s Double Asteroid Redirection Test, known as DART, has produced a result that goes well beyond what the mission originally set out to prove. When the spacecraft slammed into the small asteroid ...

Thanks to the sheer mass of Jupiter and fellow gas giant Saturn, the Solar System barycenter is rarely in the center of the Sun, and often outside of the Sun altogether, as the video below from ...