New X-ray imaging method maps sound waves, shocks, bubbles and cooling gas in galaxy clusters, revealing stronger black hole feedback in groups. (Nanowerk News) Galaxy clusters are the most massive ...

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 ...

Using data from the Chandra X-ray Observatory, an ‘X-arithmetic’ technique 'sorts features in galaxy clusters and groups into ...

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 confirm a 3.3-million-light-year radio halo hidden inside RXCJ0232–4420, a galaxy cluster thought to be quiet and ...

These clouds of radio energy are "radio relics" resulting from powerful shockwaves surging through the hot gas that fills the space amid a galaxy cluster. Credit ...

Fresh insights into star clusters advance our understanding of galaxy and planet formation.

Spring means it’s time to look up into our night sky and find one of the oldest objects in our galaxy: the M3 Cluster. NASA and other sky experts call this group of ancient stars “a truly distant ...

A galaxy cluster over 6 billion light years away. Peering back in time to when the universe was younger than the Earth is now, the images span the period from around twelve billion years ago until one ...

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Greetings stargazers. While gazing at stars is fun, gazing at groups of stars is even more fun. The more the merrier. There ...

In this new picture from NASA’s Hubble Space Telescope, a spiral galaxy glittering with star clusters is the center of ...