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 a collection of planets, moons, asteroids, comets, dust and gas that orbit our local star, the sun.

Earth Day is April 22 — think you know the planets? Test your knowledge of the solar system in this fun and engaging lifestyle quiz — and see how well you do!

Dwarf planets are worlds too small to be full-fledged planets, but too big to fit in smaller astronomical categories. Pluto, the most famous dwarf planet, lost its planet status in 2006.

Don't worry though—it's not like one planet simply fell out of the solar system. We'll explain what happened and also show you some tricks for remembering the order of all of the planets that ...

Earth is our home planet and the only one known to support life. It is the fifth-largest planet and is orbited by one moon. Our planet is the only one in the solar system to have water in its ...

For a very long time, Saturn was thought to be the only planet in our solar system with rings.

The solar system: It’s big, it’s heliocentric, and it’s got space junk to spare. Here are 24 out-of-this-world facts about the corner of space that’s home to Earth.

Can we terraform other planets so that the human race can spread around the Solar System? – Xander, aged 14, Eindhoven, The Netherlands Of the eight planets in the Solar System, we live on Earth ...

Director of the E.A. Milne Centre for Astrophysics and Head of the Department of Physics and Mathematics, University of Hull The planets in our Solar System are heated by the Sun. Here on Earth ...