CERN creates cosmic “fireballs” that could reveal the Universe’s hidden magnetism

CERN creates cosmic “fireballs” that could reveal the Universe’s hidden magnetism

Using CERN’s Super Proton Synchrotron, researchers generated plasma fireballs to simulate blazar jets. The beams stayed stable, suggesting plasma instabilities aren’t responsible for missing gamma rays. Instead, the data strengthens the idea of ancient intergalactic magnetic fields, possibly from the Universe’s earliest moments.