Planet in the Solar System beyond the orbits of the its Main-belt asteroids
Also known as outer planets
18 statements · 11% with external sources · numbers in brackets are citations
5 identifiers linking outer planet across the web's reference databases
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The Solar System is the gravitationally bound system of the Sun and the masses that orbit it, most prominently its eight planets, of which Earth is one. The Solar System is an isolated single-star planetary system within the Milky Way Galaxy. The system formed about 4.6 billion years ago when a dense region of a molecular cloud collapsed, creating the Sun and a protoplanetary disc from which the orbiting bodies assembled.