After years of searching, scientists finally trace high-energy neutrinos to a blazar
Using a neutrino detector made of Antarctic ice, astronomers have for the first time pinpointed the source of a handful of high-energy neutrinos from far beyond our galaxy: a powerful blazar shining like a beacon from nearly 4 billion light-years away.
The extragalactic neutrinos and their origins, described in two papers in the journal Science, shed light on the century-old question of where cosmic rays come from and offer the first clear proof of the potential for this nascent brand of
