However, with data from ESA's XMM-Newton and the Japan Space Agency's (JAXA) Suzaku X-ray space telescopes, astronomers have ...

In 2015, a team led by University of Geneva scientist Dominique Eckert claimed that these 'missing baryons' - subatomic ...

Learn how scientists found the universe's missing matter hiding in a massive cosmic filament stretching 23.5 million ...

Views of a massive galaxy cluster Abell 2256 have been captured by NASA’s Chandra X-ray Observatory, ESA’s XMM-Newton and three radio telescopes (LOFAR, the GMRT and the VLA). See a composite of all ...

Astronomy was not only unable to detect dark energy and dark matter, but a lot of conventional matter was also missing. That has now changed.

A massive filament of hot gas connecting four galaxy clusters has been found by astronomers. The thread may hold part of the ...

A potential solution to the decades-long “missing matter” problem has been uncovered in astronomers' recent analysis of X-ray ...

LEIDEN, Netherlands — For decades, astronomers have been hunting for roughly 40% of the universe’s ordinary matter that seemed to have vanished without a trace. Now, researchers using powerful X-ray ...

Using the XMM-Newton telescope, astronomers have discovered a vast 23 million light-year-wide tendril connecting galactic ...

Using the XMM-Newton telescope, astronomers have witnessed high-speed "burps" erupting from a distant overfeeding ...