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Pluton
A pluton in geology is an intrusive igneous rock body that crystallised from a magma below the surface of the Earth.

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Boson
In particle physics, bosons are particles with an integer spin. They may be either elementary, like the photon, or composite, as mesons. All force carrier particles are bosons. They are named after Indian physicist Satyendra Nath Bose.

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Dendrochronology
Dendrochronology is the dating and study of annual rings in trees.

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-- Edited by Blobrana at 21:12, 2007-10-25

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Defenestration
The word comes from the Latin de (out of) and fenestra (window), and is the act of throwing someone or something out of a window.

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Dichotomy
The instant when an object is exactly half lit as seen from Earth. It is usually applied to the Moon or an inferior planet.


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Proplyds
A protoplanetary disk or a dense disk of rotating gas surrounding a young star.

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Faculae
Bright patches seen of the photosphere during solar observation. They are associated with sun spots; or any region which is brighter than the surrounding area on a planet or a moon.

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Vugs
Vugs are small to medium-sized cavities inside rock that may be formed through a variety of processes. Most commonly cracks and fissures opened by tectonic activity (folding and faulting) are partially filled by quartz, calcite, and other secondary minerals.

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Vog 
Vog  is volcanic smog formed when sulphur dioxide and other pollutants emitted by an erupting volcano mixes with oxygen and moisture in the presence of sunlight.

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Pingo
A pingo is a mound of earth-covered ice found in the Arctic, subarctic, and Antarctica that can reach up to 70 metres in height and up to 2 kilometres in diameter.

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