Astronomers have puzzled for decades over how massive elliptical galaxies appeared so early in cosmic history. The standard picture suggests large galaxies slowly assembled through repeated mergers ...

An international team of astronomers using NASA's Hubble Space Telescope has discovered the aftermath of what some call "galactic cannibalism:" the aftermath of a 100 million-year-old cosmic collision ...

The vastness of space allows for a huge variety of structures to pop up all over the place. Even things we think of as one-and-done objects—like galaxies—come in quite a few shapes and sizes. Follow ...

Human classification, from celestial bodies to living organisms, often starts with their morphology. Depending on how something looks, it gets a certain label. This is all well and good until you find ...

According to the prevailing “cold dark matter” theory of the evolution of the universe, every galaxy is surrounded by a halo of dark matter that can only be detected indirectly by observing its ...

These three galaxy images from the AEGIS survey show a range of galaxy types: a disk-like spiral galaxy (top), a cloud-like elliptical galaxy (middle), and an irregular galaxy resulting from a ...

The universe contains billions of galaxies, each filled with stars, dust and mystery. Here are 12 incredible galaxies, including our own cosmic home, Milky way galaxy.

Breakthroughs, discoveries, and DIY tips sent six days a week. Terms of Service and Privacy Policy. Picture a galaxy, with its shining stars and space dust. What does ...