DICTIONARY LOOKUP
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Space Fossils
The Kuiper Belt is a disc-shaped region of icy objects beyond the orbit of Neptune -- billions of kilometers from our sun. Pluto and Eris are the best known of these icy worlds. There may be hundreds more of these ice dwarfs out there. The Kuiper Belt and even more distant Oort Cloud are believed to be the home of comets that orbit our sun.

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Watt

A unit of power, equivalent to one joule of energy per second.

wavelength

The distance between successive crests or troughs in a wave.

weathering

The chemical and physical alteration of materials exposed to the environment on or near the surface of a planetary body.

 
Can't find it? Don't understand it? Ask us.
Q
Watt

A unit of power, equivalent to one joule of energy per second.

wavelength

The distance between successive crests or troughs in a wave.

weathering

The chemical and physical alteration of materials exposed to the environment on or near the surface of a planetary body.