Trans-Neptunian Objects: An Overview
Publisher: Wikipedia 2014
A trans-Neptunian object is any minor planet in the Solar System that orbits the Sun at a greater average distance (semi-major axis) than Neptune. The Kuiper belt, scattered disk, and Oort cloud are three conventional divisions of this volume of space.
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The Solar System comprises the Sun and its planetary system, as well as a number of dwarf planets, satellites, and other objects that orbit the Sun. It formed 4.6 billion years ago from the gravitational collapse of a giant molecular cloud.
The Solar System consists of the Sun and its planetary system of eight planets, their moons, and other non-stellar objects. It formed 4.6 billion years ago from the collapse of a molecular cloud. The majority of the system's mass is in the Sun...
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