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. The …

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.

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

Mar 19, 2025 · Those stars, and billions upon billions more, are all part of what we call galaxies —vast cosmic cities made of stars, gas, dust, and dark matter, bound together by gravity and stretched …

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...

2 days ago · Research shows that both dwarf galaxies and ancient galaxies are less massive, have lower metallicity, and have lots of star-forming gas but relatively few stars.

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, and they have …

May 2, 2025 · Astronomers estimate that the universe could contain up to one septillion stars – that’s a one followed by 24 zeros. Our Milky Way alone contains more than 100 billion, including our most …

The newest estimates gained by the Hubble space telescope places the estimate of 500 billion Galaxies each with about 300 billion stars for each galaxy. A star-forming region in the Large Magellanic Cloud.

Mar 23, 2025 · Small dwarf galaxies contain about 100 million stars. Giant galaxies contain more than a trillion stars. Also, there are an estimated two hundred billion galaxies in the universe. Here is...