Galaxy Clusters Should Be Cold – XRISM Just Found Out Why They’re Not

Astronomers may have finally cracked one of the universe’s long-standing puzzles: why galaxy clusters remain mysteriously warm despite constantly losing energy through X-rays. Using Japan’s XRISM satellite, scientists observed a fast, swirling flow of superheated gas in the Centaurus cluster. This gentle but powerful motion appears to redistribute heat throughout the cluster, acting like a [...]