To probe the "knee" more precisely, scientists need to measure the energy spectra of individual types of cosmic rays, such as protons, helium and heavier nuclei. But cosmic rays in this energy range ...

In 1932, physicists glimpsed antimatter for the first time — a strange mirror image of regular matter with mind-bending ...

Historically, particle accelerators have been massive structures, often spanning kilometers underground. The Large Hadron Collider at CERN, for example, stretches 17 miles (27 km) and is one of the ...

When grown vertically into aligned arrays, known as nanotube “forests,” they form ideal channels for the corkscrewing laser ...