Why send neutrinos a long distance?

Neutrinos change flavor as they travel, and how much they change is related to how far they go. Placing detectors at different distances from the source can tell us more about neutrino properties. Comparing how neutrinos and antineutrinos change as they travel long distances can tell us more about how they might differ, which can give researchers insight into how neutrinos and antineutrinos have shaped our universe.