Add Yahoo as a preferred source to see more of our stories on Google. Artist's impression of a forming galaxy cluster in the early universe: radio jets from active galaxies are embedded in a hot ...

Gravity has been tested extremely well inside the solar system. On cosmic scales, direct tests are harder. This study pushes ...

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Gravity, as most people understand it, is the familiar force that pulls a falling apple toward Earth. But for astronomers and ...

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 ...

A colossal “cosmic volcano” has erupted in deep space, as a supermassive black hole in galaxy J1007+3540 roars back to life ...

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

Most astronomers agree that young galaxy clusters should be relatively cool compared to older ones. But researchers recently found a very young... A galaxy cluster hotter than the surface of the sun ...

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 ...

The scorching cloud of gas threaded between clusters of galaxies is five times hotter than current models predict, highlighting gaps in our models of galaxy cluster formation. (Nanowerk News) An ...

Researchers at the University of British Columbia and Dalhousie University have found a young galaxy cluster that appears far hotter than theory allows. The international team, working with the ...