Kuiper Belt_ The Invisible Frontier Beyond Neptune
Close your eyes and drift beyond Neptune, where a cold, dark frontier holds secrets that defy imagination. The Kuiper Belt is a vast ring of icy bodies stretching from 30 to 50 AU from the Sun. It is the source of short-period comets like Halley's Comet and the home of dwarf planets like Pluto and Eris. At least 70,000 objects larger than 100 kilometers are thought to orbit here, yet the total mass of the entire belt is less than one-tenth of Earth's. Let the quiet mystery of this invisible frontier carry you into a deep and restful sleep.
The skinny
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