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earth, in geology and astronomy

(Encyclopedia)CE5 A. Cross section of the earth, showing its shells B. Detailed cross section of the crust and upper mantle: The lithosphere consists of the hard rock in the crust and upper mantle, lying above t...

National Radio Astronomy Observatory

(Encyclopedia)National Radio Astronomy Observatory (NRAO), federal observatory for radio astronomy, founded in 1956 and operated under contract with the National Science Foundation by Associated Universities, Inc.,...

atlas, in geography

(Encyclopedia)atlas, in geography, collection of maps or charts. It usually includes data on various features of a country, e.g., its topography, natural resources, climate, and population, as well as its agricultu...

Meleager

(Encyclopedia)Meleager mĕlēāˈjər [key], hero in Greek mythology. He was the son of Oeneus, king of Calydon, and Althaea. When Meleager was born, a prophecy said that he would die when a certain log in the fire...

Dioscuri

(Encyclopedia)Dioscuri: see Castor and Pollux. ...

Polydeuces

(Encyclopedia)Polydeuces pŏlˌĭdo͞oˈsēs [key]: see Castor and Pollux. ...

In

(Encyclopedia)In, symbol for the element indium. ...

Gemini

(Encyclopedia)Gemini jĕmˈənī, –nē [key] [Lat.,=the twins], northern constellation lying on the ecliptic (the sun's apparent path through the heavens) between Taurus and Cancer, N of Canis Minor; it is one of...

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