Dwarf galaxy
Small galaxy composed of up to several billion stars
Dwarf galaxy
A dwarf galaxy is a small galaxy composed of about 1,000 up to several billion stars, as compared to the Milky Way's 100–400 billion stars. The Large Magellanic Cloud, which closely orbits the Milky Way and contains over 30 billion stars, is sometimes classified as a dwarf galaxy; others consider it a full-fledged galaxy. Dwarf galaxies' formation and activity are thought to be heavily influenced by interactions with larger galaxies. Astronomers identify numerous types of dwarf galaxies, based on their shape and composition.
Read on Wikipedia · Image NASA/Ames Research Center, Public domain
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