Astonishing 'halo' of high-energy particles around giant galaxy cluster is a glimpse into the early universe. Robert Lea. Tue, July 1, 2025 at 3:00 PM UTC. 3 min read.

A distant cluster of galaxies is wrapped in a vast halo of high-energy particles that could be the work of supermassive black holes or a cosmic particle accelerator.

Giant atoms with Rydberg states have already been successfully used for such techniques in other contexts." More information: Xiaoling Wu et al, Dissipative time crystal in a strongly interacting ...

A crystal is an arrangement of atoms that repeats itself in space, in regular intervals: At every point, the crystal looks exactly the same. In 2012, Nobel Prize winner Frank Wilczek raised the ...

A giant sunspot cluster rivaling the one that caused the Carrington Event in 1859 could trigger a cannibal coronal mass ejection. But this is unlikely to cause major problems.