A composite of galaxy cluster known as MACS0416 created using James Webb Space Telescope and Hubble Space Telescope imagery.

The focus of this NASA/ESA Hubble Space Telescope image is an active spiral galaxy on a journey lasting hundreds of millions ...

NASA's Hubble Space Telescope snapped a delicate dance of celestial bodies in a new image of a distant galaxy that’s on a ...

A stunning spiral galaxy called Messier 88 is racing through the crowded Virgo Cluster on a journey that will dramatically ...

Look closely at this image from NASA's Hubble Space Telescope and you'll see galaxies of various shapes and sizes clustered ...

A developing galaxy cluster dating to about 1 billion years after the Big Bang is shown in this handout image released on January 28, 2026. The white box marks the field of view of the Chandra X-ray ...

Here’s a hand-wavy attempt: a galaxy is a collection of stars, gas, dust and dark matter all held together by mutual gravity. At the lower end of the scale, some very small galaxies could be ...

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

Astronomers studying a distant galaxy cluster stumbled upon ancient radio signals that might hold clues to the formation of the early universe. While studying the distant galaxy cluster known as ...

Roughly 2.8 billion light-years from Earth, two galaxy clusters are engaged in a cosmic tussle. These enormous structures last collided about a billion years ago, but now, it appears they’re going ...

Astronomers studying a distant galaxy cluster stumbled upon ancient radio signals that might hold clues to the formation of the early universe. While studying the distant galaxy cluster known as ...

Scientists have long thought that galaxies evolved first, while the black holes at their center formed after from the collapse of large stars. Recent observations by Webb, however, tell a different ...