Astronomical Dictionary


Dictionary of Astronomical Definitions and Terms.
Astronomical [1] [2] [3] [4] [5] [6] [7] [8] [9]

 

Definition


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Enceladus
In Greek and Roman mythology, a giant, son of Titan and Gaea. Buried by an angry Zeus under Mount Etna. When the giant hisses and thrusts out his fiery tongue, Mount Etna erupts.
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Ejecta
Material thrown out of a volcano or impact crater.
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Eistla
In Norse mythology, a giantess.
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Drift
A general term for all rock debris transported from one place and deposited in another, and distinguished from solid bedrock.
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Dione
In Greek mythology, the mother of Aphrodite, and daughter of Zeus.
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Derceto
Philistine fertility goddess.
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Deimos
In Greek mythology, a son of Ares (Mars) who, with brother Phobos, was a constant companion to his father.
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Danu
The greatest of the goddesses of ancient Ireland.
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Dactyl
In Greek mythology, a legendary being that lived on Mount Ida.
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Cuspate
Shaped like a cusp; a sharp projection of material.
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Crust
The outermost layer of the lithosphere.
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Crater
An approximately circular depression, sometimes surrounded by a raised rim. Craters are typically formed by explosion during meteorite impact.
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Chondrite
A stony meteorite, composed of finely crystallized material.
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Chasma
A large canyon.
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Charon
In Greek mythology, ferryman of the River Styx, who carried the dead to the underworld. Each dead person was buried with a coin in his mouth or on his eyelids to pay for the crossing.
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Cerberus
In Greek mythology, the three-headed dog that guards the entrance to the underworld.
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Centaur
In Greek mythology, a being with the head, arms, and torso of a man, and the body and legs of a horse. The personification of wisdom and beastliness: the two natures of humankind.
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Cassini
Gian Domenico Cassini (1625-1712) Astronomer born in Italy, later a naturalized French citizen. Discovered four of Saturn's satellites, observed a dark division in Saturn's ring (the Cassini Division).
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Carson
Rachel Carson (1907-1964) American biologist and author.
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Candor
Candor Chasma - from the Latin candor, meaning "blaze" or "the white" from its appearance.
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Callisto
In Greek mythology, a nymph, follower of Artemis. Zeus wanted to woo her, and so disguised himself as Artemis and seduced her. To hide her from his jealous wife Hera, Zeus changed Callisto into a bear.
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Caldera
A large volcanic depression at the summit of a volcano, caused by collapse or explosion.
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Breccia
Coarse-grained rock composed of angular fragments of pre-existing rock.
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Bedrock
Continuous solid rock that underlies regolith and is exposed at outcrops.
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Basin
A depressed area with no surface outlet.
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Astronomical [1] [2] [3] [4] [5] [6] [7] [8] [9]

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