General astronomy

General astronomy

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General astronomy

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Astronomy; General astronomy

thin material that is transparent to only a narrow range of wavelengths of light.

flat universe

Astronomy; General astronomy

a universe that stop expanding only after an infinite amount of time (a special case of an open universe).

flux

Astronomy; General astronomy

the amount of energy passing through a given area (e.g., one square centimeter) in a second. It is the apparent brightness of an object.

one of two special points along the long axis of an ellipse such that the addition of the distances (satellite to focus#1) plus (satellite to focus#2) always equals the same numerical value. It is ...

galactic cannibalism

Astronomy; General astronomy

the swallowing up whole of a small galaxy by a large galaxy (usually a large elliptical galaxy at the center of a galaxy cluster).

galaxy

Astronomy; General astronomy

a very large cluster of stars (tens of millions to trillions of stars) gravitationally bound together.

General Relativity

Astronomy; General astronomy

a theory invented by Albert Einstein to describe gravity. It says that gravity is a warping or distortion of spacetime around a massive object. Although it applies everywhere in the universe, General ...