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Wikipedia talk:Featured article candidates/Solar System/archive2

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An artist's depiction of the Solar System
An artist's depiction of the Solar System

The Solar System is the gravitationally bound system of the Sun and the objects that orbit it. It contains eight planets, numerous dwarf planets, an asteroid belt between Mars and Jupiter, the Kuiper belt, and the scattered disc beyond Neptune's orbit. The Solar System was formed 4.6 billion years ago from the gravitational collapse of an interstellar molecular cloud, which formed the Sun and a protoplanetary disk that formed other objects. Many celestial bodies have natural satellites orbiting them, and all giant planets and a few smaller bodies are encircled by planetary rings. Many small-body populations, including comets, centaurs and interplanetary dust clouds freely travel between the Solar System's regions. The solar wind, a stream of charged particles flowing outwards from the Sun, creates a heliosphere region. The Oort cloud may also exist roughly a thousand times further than the heliosphere. (This article is part of a featured topic: Solar System.)