Galaxies, averaging an estimated 100 million stars, [3] range in size from dwarfs with less than a thousand stars, [4] to the largest galaxies known – supergiants with one hundred trillion stars, …

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

Oct 21, 2025 · 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 …

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 contain ...

Mar 19, 2025 · Galaxies in Clusters and Superclusters Galaxies often group together in clusters, bound by gravity. The Local Group, our galactic neighborhood, includes about 54 galaxies, …

May 9, 2025 · Galaxies come in many different variations, but astronomers classify them into four main types: spiral, elliptical, irregular and peculiar.

Mar 23, 2025 · Galaxies come in clusters Galaxies group together in clusters. Our own galaxy is part of what is called the Local Group, and it contains roughly 55 galaxies.

3 days ago · Explore the main types of galaxies: spiral, elliptical, barred and irregular with stunning astrophotography and insights into how galaxies form, collide & evolve.

Galaxies are home to most of the stars in the universe, and they form the beads of the cosmic jewelry that defines structure on the largest scales. But galaxies haven’t always been around, …

Named galaxies This is a list of galaxies that are well known by something other than an entry in a catalog or list, or a set of coordinates, or a systematic designation.