Solar SystemDescribe the location and nature of the main constituents of our Solar System, including planets, dwarf planets, asteroids, comets, centaurs and Trans-Neptunian Objects (TNOs)
Objects in the Solar System orbit a central star, our Sun. The largest bodies are known as planets and officially there are 8 of them.
New type of objects have been defined in the last few years - dwarf planets. Typically these are smaller and have certain orbits to distinguish them from planets.
Other objects are like dwarf planets and move in an orbit past Neptune. These are called Trans-Neptunian Objects (TNOs).
Information on Comets and Asteroids is located in the Comets & Meteors section