cosmosphere

noun
cos·mo·sphere | \ˈkäzmə+ˌ-\
plural -s

Definition of cosmosphere 

1 : the material universe

2 : an apparatus for showing the position of the earth at any given time with respect to the fixed stars that consists of a hollow glass globe on which are depicted the stars and constellations and within which is a terrestrial globe

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History and Etymology for cosmosphere

cosm- + -sphere

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