Two years ago, Earth was struck by one of the most potent cosmic rays, a phenomenon that scientists remarkably documented. However, such observations do not alter the fundamentals of this curious ...

The study of cosmic rays and heliospheric physics bridges our understanding of high‐energy particles from distant astrophysical sources and the dynamic environment shaped by the solar wind and ...

Physicists finally know where at least some of these high-energy particles come from, which helps make the neutrinos useful for exploring fundamental physics. Of the 100 trillion neutrinos that pass ...