The so-called 'planetesimal belts' are filled with tiny millimeter-sized particles created by collisions between comets.

Six of our cosmic neighbors are expected to line up across the night sky tonight, in what has been dubbed a "planetary parade ...

The joint European-Japanese mission is only the second survey of Mercury, the least explored planet in the inner solar system ...

From breathtaking views of asteroids to stunning planetary snapshots, Hubble’s exploration of our solar system has been ...

An object eight times the mass of Jupiter may have swooped around the sun, coming superclose to Mars' present-day orbit ...

Jupiter's Great Red Spot storm, which usually appears dark-red, can be seen shining a lurid blue color in an ultraviolet ...

If you were to perfectly follow the steps in An Idiot's Guide to Making a Solar System, you should eventually find yourself ...

A once-in-a-lifetime comet is approaching the sun — and it will be visible for the first time in 160,000 years. The comet ...

A rare parade of planets will light up the night sky throughout January. Six planets will be in alignment for the rest of the ...