Earth science

Earth science

Any of several geological sciences that are concerned with the earth, its origins, and all of its various structures and physical forms and phenomena.

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Earth science > Geology

Cassini division

Earth science; Geology

A space observed between the A and B segments of Saturn’s rings. The gap is believed to have been created by the gravitational pull from Mimas, one of Saturn’s moons.

channels

Earth science; Geology

Lava channels extending from hundreds to thousands of kilometers in length are conspicuous on the Venusian plains. Simple channels typically show little or no branching. They ...

chaotic terrain

Earth science; Geology

Regions of fractured, jumbled rocks on Mars that apparently collapsed when groundwater suddenly surged outward.

Comet Shoemaker-Levy 9

Earth science; Geology

On July 7, 1992, Comet Shoemaker-Levy 9 made a close approach to Jupiter and broke apart into 21 pieces due to tidal forces inside Jupiter’s Roche limit. On the subsequent pass, ...

comets

Earth science; Geology

Small, icy bodies that revolve around the sun, usually with long periods, that are made up of a nucleus, coma and two tails- one composed of ions and the other composed of dust. ...

continental crust

Earth science; Geology

The part of the crust that directly underlies the continents and continental shelves. Averages about 35 km in thickness, but may be over 70 km thick under largest mountain ranges.