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

magnetosphere

Earth science; Geology

The confines of the Earth’s magnetic field, modified by the influence of the solar wind. On the sunlit side, the magnetosphere is nearly hemispherical with a radius ~10 Earth ...

main belt asteroids

Earth science; Geology

Asteroids that orbit the Sun at distances from 2.2 AU to 3.6 AU. This orbital zone between Mars and Jupiter is the location of most of the known asteroids. Also, asteroid belt.

manicougan impact stucture

Earth science; Geology

A 70 km diameter impact crater in Quebec, Canada. The 210 million year old structure has a central peak of shock-metamorphosed rock, surrounded by a thick layer of frozen impact ...

Earth mantle

Earth science; Geology

The zone of the Earth below the crust and above the core, it is divided into the upper mantle and the lower mantle, with a transition zone between.

mare

Earth science; Geology

A dark, low-lying lunar plain, filled to some depth with volcanic rocks.

Mariner 10

Earth science; Geology

Only one spacecraft, Mariner 10, has ever visited Mercury. It made three passes near the planet in 1974 and '75. It snapped pictures of half of the planet's surface, measured ...