Galaxy Wallpaper

Incredible Galaxy Photo Gallery - Wallpaper Unique Illustrations - Stars Art Images Free Download !

A galaxy is a gravitationally bound system of stars, stellar remnants, interstellar gas, dust, and dark matter. The word galaxy is derived from the Greek galaxias, literally "milky", a reference to the Milky Way. Galaxies range in size from dwarfs with just a few billion stars to giants with one hundred trillion stars, each orbiting its galaxy's center of mass.

Amazing Galaxy and Sky Pictures HD Wallpapers - Digital Art High Definition !

Fun Facts : Galaxies are categorized according to their visual morphology as elliptical, spiral and irregular. Many galaxies are thought to have black holes at their active centers.

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