Explore the true scale of the Solar System in this video, which illustrates the relative sizes of the planets and their ...

Astronomers have uncovered a massive new trans-Neptunian object, 2017 OF201, lurking at the edge of our solar system. With an ...

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.

Astronomers have discovered a rare solar system in the Milky Way with six planets orbiting in perfect rhythm like a cosmic orchestra.