Kuiper Belt

A wide belt beyond the orbit of Neptune, the most distant planet from the Sun, that is theorized to contain tens of millions of icy bodies. The most famous member of the belt is Pluto, but it also includes three other objects that have been classified as dwarf planets. Most of the Kuiper Belt's members are leftover "building blocks" from the birth of the planets. They were thrown into distant orbits by gravitational interactions with the giant outer planets.

Radio Programs

Icy Time Capsules Refugees from the realm of the giants Thursday, January 8, 2015
Dwarf Planets A new name for leftover building blocks Monday, January 5, 2015
Distant Realms A realm of iceballs far from the Sun Tuesday, May 20, 2014
New Dwarfs New neighbors in the outer solar system Saturday, June 11, 2011

Featured Images

Three dwarf planets shown to scale with Earth and Moon
Dwarf Planets Monday, January 5, 2015

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