The size of the solar system is defined by the volume of space over which the sun’s influence exceeds those of other nearby stars in the Milky Way galaxy.

The size of the Solar System and the Universe is truly beyond our comprehension. When we think of the vastness of space, we often imagine distances that stretch far beyond the Earth, yet even our ...

The Size of the Solar System Telescopic methods leave an uncertainty of as much as 170,000 miles in the earth-sun distance.

YouTuber and animator, MetaBallStudios, has created an enlightening 3D animation comparing the sizes of a handful of moons in our solar system.

Our solar system could be hiding an extra planet in its outermost reaches. It is possible that a giant planet lurks in the Oort cloud, which begins hundreds of billions of kilometres beyond Pluto ...