Nobelprize.org
Mankind has studied the universe for thousands of years by looking at the fascinating night sky, guided by the visible light emitted from myriads of stars and other phenomena. During the last century new pictures of the night sky have been discovered by scientists using different wavelengths of light which the naked eye cannot see, such as radio waves, infrared light, x-rays and gamma rays. Each time new windows in the sky are opened, new unexpected phenomena have been discovered, like the microwave background from Big Bang, neutron stars, active galactic nuclei (AGN), black holes, gamma ray bursts (GRB) and other exciting objects. Today, scientists are starting to open up a completely new window by using another elementary particle, the neutrino, instead of the photon, which is the elementary particle of light used to investigate the universe. This new field called neutrino astronomy, will hopefully reveal new unknown phenomena and help us answer several of the questions we have today.