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Tycho
Tycho [ tkō ]


noun 
Definition:
 
Moon crater: a crater on the south of the Moon that is the centre of the Moon's most extensive ray system. It is 84 km (52 mi) in diameter, 4500 m (14,750 ft) high, and is surrounded by terraced walls.
Encarta® World English Dictionary [World English Edition] © & (P)2009 Microsoft Corporation. All rights reserved. Developed for Microsoft by Bloomsbury Publishing Plc.
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