Galaxy

/ˈɡæləksi/

noun

A large group of stars, gas, and dust in space that's bounded together by gravity.

The Milky Way is a galaxy that contains our solar system.

Technical

Definition 1 of 3

Pro Tip 1/3

Used in scientific contexts to describe vast systems of stars and celestial bodies.

Astronomers discovered a new galaxy that's billions of light-years away.

Pro Tip 2/3

A galaxy is much larger than a constellation; it contains many constellations within it.

Unlike Orion, a constellation, our galaxy includes numerous star systems.

Pro Tip 3/3

Gravity holds a galaxy together, making it a united system, not a random cluster.

Our galaxy's gravity pulls in nearby cosmic dust and gas, helping it grow.

clusterconstellationcosmosnebulauniverse

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