Here is a bit more background on the properties of neutrinos:

Neutrinos have little mass, and zip through matter so easily that a block of lead a light-year across wouldn’t stop them. These elusive particles come from high-energy sources: exploding stars, black holes and galactic cores among them.

Though they don’t interact much with matter, occasionally one will hit an atomic nucleus on Earth. When that happens the neutrino generates a particle called a muon. That’s what scientists look for when seeking neutrinos — the muons move faster than the speed of light in a solid (ice in this case) and generate light waves, like the wake of a boat in water, called Cherenkov radiation.

In general terms, this find indicates that we are being influenced by portions of the universe in ways we do not understand.  Usually we just think of seeing a star or galaxy through a telescope and assuming the visual light or radio waves we detect are where things stop.

And here is a cool related video about neutrinos.

thanks to space.com for the great info