
Galaxy | Definition, Formation, Types, Properties, & Facts | Britannica
4 days ago · Galaxy, any of the systems of stars and interstellar matter that make up the universe. Many such assemblages are so enormous that they contain hundreds of billions of stars. …
Galaxy - Wikipedia
A galaxy is a system of stars, stellar remnants, interstellar gas, dust, and dark matter bound together by gravity. [1][2] The word is derived from the Greek galaxias (γαλαξίας), literally …
Galaxies - NASA Science
May 2, 2025 · Galaxies consist of stars, planets, and vast clouds of gas and dust, all bound together by gravity. The largest contain trillions of stars and can be more than a million light …
Fact sheet: Galaxy - Canadian Space Agency
Galaxies are filled with different objects that vary in temperature. They are mostly empty space, though, so the average temperature of any given spot in a galaxy is likely to be quite cold. …
Galaxies—facts and information | National Geographic
Galaxies are sprawling systems of dust, gas, dark matter, and anywhere from a million to a trillion stars that are held together by gravity. Nearly all large galaxies are thought to also...
Galaxy - ESA/Hubble
Galaxy A galaxy is a ensemble of stars, dust, gas and dark matter that are bound together by gravity. Galaxies contain anywhere between a few hundred million to a hundred trillion stars. …
26 Facts About Galaxy
Jan 19, 2025 · Discover 26 mind-blowing facts about galaxies, from their formation to their mysterious dark matter, and expand your cosmic knowledge!
40 Amazing Facts About Galaxy | Amazing Facts 4U
Jun 26, 2025 · 40 Amazing Mind-Boggling Facts About Galaxy - 1.) A galaxy is a massive, gravitationally bound system that consists of stars and stellar remnants, an interstellar medium …
34 Mind-Blowing and Fun Galaxy Facts | FactRetriever.com
Jan 4, 2022 · Galaxies are awesome in scope, and fill the mind with imagination and wonder. Explore the furthest reaches of space with us in our list of fun galaxy facts.
Galaxy Facts - Interesting Facts about Galaxies
A galaxy is a massive, gravitationally bound system that consists of stars, stellar objects (such as brown dwarfs and neutron stars), nebulae, an interstellar medium of gas and dust, black holes, …