The burgeoning field of neutrino astronomy

A new breed of experiments seeks sources of cosmic rays and other astrophysics phenomena. Ghostlike subatomic particles called neutrinos could hold clues to some of the greatest scientific questions about our universe: What extragalactic events create ultra-high-energy cosmic rays? What happened in the first seconds following the big bang? What is dark matter made of? Scientists are asking these questions in a new and fast-developing field called neutrino astronomy, says JoAnne Hewett, director ...