GALAXY

Galaxy

A galaxy is a massive, gravitationally bound system consisting of stars, stellar remnants, an interstellar medium of gas and dust, and dark matter, an important but poorly understood component. The word galaxy is derived from the Greek galaxias, literally "milky", a reference to the Milky Way. Examples of galaxies range from dwarfs with as few as ten million stars to giants with one hundred trillion stars, each orbiting their galaxy's own center of mass.

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galaxy

Noun

  1. The Milky Way; the apparent band of concentrated stars which appears in the night sky over earth.
  2. Any of the collections of many millions of stars, galactic dust, black holes, etc. existing as independent and coherent systems, of which there are billions in the known universe.


The above text is a snippet from Wiktionary: galaxy
and as such is available under the Creative Commons Attribution/Share-Alike License.

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