The number of planets that orbit the sun depends on what you mean by “planet,” and that’s not so easy to define ...

Sean Murray says new engine advances in Light No Fire's development creates "…this urge to share it with the [No Man's Sky] ...

Some are the size of small stones and pebbles ... Saturn is famous for its beautiful rings which extend out about 280,000 km from the planet, the rings have an average thickness of only 10m.

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