Abstract: The IceCube Neutrino Observatory is a detector monitoring a billion tons of ice at the South Pole for energetic signals from across the cosmos. Led by the University of Wisconsin – Madison, it detects neutrinos, which are nearly massless subatomic particles that can travel large distances straight through matter. Because of this, neutrinos serve as super X-rays, carrying new information that is complementary to astronomy done with any type of photons or electromagnetic waves. IceCube has previously detected neutrinos from distant galaxies powered by giant black holes. We have now detected neutrinos from our own Galaxy, the Milky Way. I will describe how IceCube works and what it has unveiled so far about both the distant Universe and our own cosmic neighborhood.