Astronomy

Astronomy

The scientific study of planets, stars, black holes, comets and other celestial bodies that make up outer space.

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Astronomy > Planetology

saturnian oxygen

Astronomy; Planetology

NASA's Cassini spacecraft has revealed an oxygen atmosphere exists around Saturn's moon Dione. Dione is only one of Saturn’s 62 moons. However, the fact that other Saturn moons ...

Late Heavy Bombardment

Astronomy; Planetology

A period of time approximately 4.1 to 3.8 billion years ago during which a large number of impact craters were formed on the Moon, and by inference on Earth, Mercury,Venus, ...

extremophile

Astronomy; Planetology

An organism that thrives in physically or geochemicallyextreme conditions that are detrimental to most life on Earth.

Enceladus

Astronomy; Planetology

The sixth-largest of the moons of Saturn, discovered in 1789 by William Herschel, which seems to have liquid water under its icy surface.

exoplanet

Astronomy; Planetology

Also called an extrasolar planet, a planet outside the Solar System, not only occurring around stars but also as free-floating planetary-mass bodies; the nearest known exoplanet ...