galaxy

galaxy

A galaxy is a massive, gravitationally bound system that consists of stars and stellar remnants, an interstellar medium of gas dust, and an important but poorly understood component tentatively dubbed dark matter.It is also called 'milky way'

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Part of Speech: noun
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Industry/Domain: Astronomy
Category: Galaxy
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Related terms

black hole

Astronomy; Galaxy

A black hole is the circular dark space that sits at the center of a galaxy which absorbs everything including light so nothing can be reflected or escaped from it. Around a black ...

Hubble

Astronomy; Galaxy

American astronomer who showed that there are galaxies beyond our own and that they are constantly moving outwards from ours.

Magellanic Clouds

Astronomy; Galaxy

Two small galaxies that are the galaxies closest to the Milky Way. These are faintly visible in the night sky of the Southern Hemisphere.

quasar

Astronomy; Galaxy

A very bright, star like object that is extremely far away from the Earth. A quasar produces several thousand times as much energy as the entire Milky Way galaxy.

asteroid number

Astronomy; Galaxy

Asteroids are assigned a serial number when they are discovered; it has no particular meaning except that asteroid N+1 was discovered after asteroid N