The UNLV Physics and Astronomy Department presents "IceCube: A Neutrino Window on the Universe," a talk from Professor Francis Halzen of University of Wisconsin-Madison. This talk is part of The Russell Frank Astronomy Lecture Series.

The IceCube project at the South Pole melted 86 holes over 1.5 miles deep, in the Antarctic icecap, to construct an enormous observatory. The experiment discovered a flux of neutrinos reaching us from the cosmos, with energies more than a million times those of neutrinos produced at accelerator laboratories. These cosmic neutrinos are astronomical messengers from the extreme universe that is opaque to light. We discuss the IceCube telescope and recent discoveries that some high-energy neutrinos originate from sources powered by supermassive black holes.