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Corotation circle

 The corotation circle is the circle around the galactic center of a spiral galaxy, where the stars move at the same speed as the spiral arms. 



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Cereology

 Cereology is the study of crop circles.



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Azores High

 The Azores High is a large subtropical semi-permanent centre of high atmospheric pressure typically found south of the Azores in the Atlantic Ocean, at the Horse latitudes. 



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Lilia

 Lilia are concealed pit traps, with tapering sides and a sharpened stake at the bottom, dug by Romans



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HORTA

HORTA is an underground geographic positioning technology utilized in the mining industry and being considered for extraterrestrial space mining applications. 



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Evapotranspiration

Evapotranspiration is the sum of evaporation and plant transpiration from the Earth's land and ocean surface to the atmosphere.



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Umbraphile

AN umbraphile is person who loves eclipses, particularly solar eclipses, and often travels to see them. Literally a "shadow lover". 



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Wolf number

The Wolf number is a quantity that measures the number of sunspots and groups of sunspots present on the surface of the sun.



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Joy's Law

Joy's Law describes the tendency of sunspots to be increasingly "tilted" (with the leading spot closer to the equator than the following spots) with the heliographic latitude of these regions. It is named after Alfred Harrison Joy.



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 Sondage

In archeology sondages are test excavations or test-pits



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