The Andromeda Galaxy, our Milky Way’s colossal neighbor, lies 2.5 million light-years away yet shines visibly in dark skies.

The Andromeda Galaxy (M31, NGC 224) is a truly stunning and colossal presence in our universe, located 2.5 million light years away in the Andromeda constellation. This supergiant spiral galaxy, often ...

The JWST discovers the Zhúlóng spiral galaxy, as massive as the Milky Way, formed only a billion years after the Big Bang.

A decade of observations by NASA’s Hubble Space Telescope has produced the sharpest and most detailed images of the Andromeda ...

Hidden in the ‘Infinity Galaxy,’ a black hole floats in space where none should exist, upending old ideas about black hole birth.

This stunning image dubbed 'Cosmic Owl' captures a remarkable moment in deep space, billions of light years away.

By studying a Cepheid variable star within the Andromeda Galaxy, Edwin Hubble proved that Andromeda was too far away to be a nebula within the Milky Way.

NASA's James Webb Space Telescope (JWST) has produced a new image of the Bullet Cluster, which is a titanic collision between two individual galaxy clusters.

The leading JWST image clearly shows the galactic outflow winds from the galaxy's center. They're driven by the abundant formation of massive stars, and by supernova explosions.

The Andromeda galaxy lies just beyond (...OK, about 2.5 million light-years beyond) our galaxy, the Milky Way. For the past hundred years or so, scientists thought these galaxies existed in a long ...

A possible new "jellyfish" galaxy discovered by the James Webb Space Telescope could deepen our understanding of galaxy evolution and star formation.

NASA's Chandra X-ray Observatory provides a new look at the Andromeda galaxy in this multi-wavelength image that includes X-ray, ultraviolet, optical, infrared, and radio images and illustrates the ...