In a cosmic first, scientists detect neutrinos from a distant galaxy

I've only skimmed the article so maybe im missing it, but have they described how they are getting direction from the neutrino detection? is it that when it does interact there is a vector to that interaction?

edit: yeah, that seems to be it

> The sensors record the energy level and direction of the flash of light emitted by the charged particle created when a neutrino crashes into other matter. From that information, scientists can extrapolate the energy level of the neutrino and where it came from.