In a first, scientists detect neutrino that formed outside our galaxy

IceCube lab in Antarctica under the stars.
IceCube lab. Photo: Martin Wolf/IceCube/NSF

In a find that advances our understanding of fundamental particles in the universe, scientists announced Thursday they've detected a high-energy neutrino from outside our galaxy and, for the first-time, pinpointed its source.

Why it matters: The evidence, detailed in two new studies in the journal Science, further demonstrate the potential for multi-messenger astronomy — that is, astronomy that looks at the whole electromagnetic spectrum — to help scientists answer longstanding mysteries about high-energy physics.