General astronomy

General astronomy

Industry: Astronomy

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General astronomy

geocentric

Astronomy; General astronomy

(universe): model of the universe with the Earth at the center and all other objects moving around it.

explanation about how the Moon was formed from mantle material blown out by the impact of a Mars-sized (or larger) planet with the Earth several billion years ago. The ejected material condensed to ...

giant molecular cloud

Astronomy; General astronomy

large, dense gas cloud (with some dust) that is cold enough for molecules to form. A typical giant molecular cloud has a few hundred thousand to a few million solar masses of material. Stars form in ...

globular cluster

Astronomy; General astronomy

spherical cluster of hundreds of thousands to millions of very old stars. The orbits of most globular clusters are very elliptical and oriented in random directions.

granulation

Astronomy; General astronomy

bright spots of convection on the Sun's surface 700 to 1000 kilometers across forming a honeycomb pattern. Formed from hot, bright gas rising from below in the center of a granule and cooler, dimmer ...

gravitational lens

Astronomy; General astronomy

the focussing of light from a distant object by the warped space-time around a massive body (such as a galaxy) between you and the distant object as predicted by General Relativity.