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-years across.

Naked-eye galaxies This is a list of galaxies that are visible to the naked eye, for at the very least, keen-eyed observers in a very dark-sky environment that is high in altitude, during clear and stable weather.

Nov 27, 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 stars.

Jul 25, 2023 · How many galaxies are there in the Universe? Recent estimates tell us that there could be as many as two trillion galaxies in the observable Universe. Two trillion galaxies is an estimate. …

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

Mar 23, 2025 · Typically, galaxies are millions of light-years apart. Galaxies are the building blocks of our universe. Their distribution isn’t random, as one might suppose. Instead, galaxies reside along...

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...

Mar 19, 2025 · The Hubble Space Telescope has provided deep-field images of galaxies billions of light-years away. These ancient galaxies tell the story of how the universe evolved from a hot, dense, …

Jan 18, 2024 · What is a galaxy, and what are the different types found in the Universe? Find out about galaxy formation and the history of their study.

1 day ago · The filament of matter stretches 50 million light-years, and contains a row of galaxies 5.5 million light-years long that are rotating in sync with the filament.