The Chandra X-ray Observatory view of galaxy group NGC 4839 has revealed that it is "plunging into the Coma galaxy cluster ...

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

Explore HubbleHubble HomeOverviewAbout HubbleThe History of HubbleHubble TimelineWhy Have a Telescope in Space?Hubble by the ...

Some of these open clusters are pretty famous, such as the Pleiades cluster, also known as the Seven Sisters. This is ...

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.

NASA's James Webb Space Telescope recently zeroed in on the Bullet Cluster—delivering highly detailed images that show a ...

Webb’s new images of the Bullet Cluster reveal the most detailed dark matter map yet, shedding light on cosmic collisions and ...

A distant galaxy 12 billion light-years away shows signs of being a jellyfish galaxy, with trailing streams of gas caused by ...

A vast filament of gas stretching across the cosmos may help solve the mystery of the Universe’s missing matter. Astronomers ...

To understand gravitational lensing and dark matter, James Jee, a professor at Yonsei University, says to think of a pond ...

The most distant known example of what astronomers call a “jellyfish galaxy” has been spotted by NASA’s James Webb Space ...

Seen as a long strand with smaller threads branching, the Quipu superstructure contains 68 galaxy clusters spanning 1.4 ...