particle accelerators

Our universe started with a bang that blasted everything into existence. But what happened next is a mystery. Scientists think that before atoms formed—or even the protons and neutrons…

Other Asian innovations, like paper and gunpowder, have a clear record of dissemination to Europe, with artifacts and record-keeping that trace their travel westward along routes of trade…

Gamma rays from this supernova remnant have been seen by telescopes since 2007, but exceptionally energetic light wasn’t detected until 2020, when it was picked up by the HAWC Observatory in…