Researchers at KM3NeT Observatory announce the detection of a neutrino with energy 220 PeV. A possible source of such ultrahigh-energy particles is from a primordial black-hole.
Galaxy Clusters Have Been Surrounded by High-Energy Particles for Almost Their Entire History
Astonishing 'halo' of high-energy particles around giant galaxy cluster is a glimpse into the early universe
How do the universe's highest-energy particles originate? Magnetic outflows stemming from star mergers, analysis concludes
