This unprecedented view of the Bullet Cluster provided by the James Webb Space Telescope and the Chandra X-ray Observatory ...

NASA Chandra X-ray telescope data from galaxy cluster Abell 2146 showed a "shockwave that stretches for some 1.6 million miles," that was created by a collision with another cluster. Credit: ...

The discovery, made with the LOFAR (LOw Frequency ARray) radio instrument in Europe, indicates that galaxy clusters, which ...

Views of a massive galaxy cluster Abell 2256 have been captured by NASA’s Chandra X-ray Observatory, ESA’s XMM-Newton and ...

The Milky Way is about 100,000 light-years across, 1,000 light-years thick, and populated by 100 billion stars. That sounds ...

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.

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

The latest approach has been to use Fast Radio Bursts (FRBs), powerful emissions of radio waves that last just a fraction of ...

The mighty James Webb and Hubble space telescopes united to reveal stars being born inside the Small Magellanic Cloud, which ...

Two studies fill in gaps about the cosmos’s ordinary matter. One maps it all, even the “missing matter.” The other details one of its hiding spots.

The Milky Way could have many more satellite galaxies than scientists have previously been able to predict or observe, ...

The Andromeda galaxy is the galaxy next door, a very faint, fuzzy thing in the night sky, larger than a full moon. Textbooks ...