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), meaning 'milky', a reference to …

May 5, 2026 · 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-years across. The …

Apr 29, 2026 · What is a galaxy? A galaxy is 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 …

Galaxy is a community-driven web-based analysis platform for life science research.

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Mar 18, 2026 · A galaxy can contain hundreds of billions of stars and be many thousands of light-years across. Our own galaxy, the Milky Way, is around 100,000 light-years in diameter.

Feb 5, 2026 · What is a Galaxy? A galaxy is a system of stars, stellar remnants, interstellar gas, dust, and dark matter bound together by gravitational forces.

Universe Map is your definitive guide to galaxies, stars, and cosmic structures — mapped, analyzed, and optimized for discovery and research.

May 16, 2026 · A galaxy is a massive gravitationally bound system containing stars, stellar remnants, gas, dust, dark matter, planets, and other astronomical objects. Galaxies range from tiny dwarf …

Mar 19, 2025 · A galaxy is one of the largest structures in the universe. It is a gravitationally bound system made up of stars, planets, gas, dust, dark matter, and often mysterious phenomena such as …