Discover the order of planets in the solar system. From Mercury to Neptune, explore our solar system and learn more about our cosmic home. The solar system is our cosmic neighborhood, made up of ...

The Sun is the largest object in the Solar System and ... around a planet. An artificial satellite is a man-made body placed in orbit round the Earth or another planet in order to collect ...

Everyone knows about the Solar System, and the planets that make it up. They’re in space, orbiting the Sun, in an order we all at least used to be able to recite. But it was not always so.

Our solar system may have a ninth planet after all, following the declassification of Pluto nearly two decades ago, ...

With a radius of 3,959 miles, Earth is the fifth largest planet in our solar system, and it's the only one known for sure to have liquid water on its surface. Earth is also unique in terms of ...