Neutrinos from Heaven to Hell and Beyond

Neutrinos are one of the most abundant particles in the universe and are constantly streaming through our bodies unnoticed. Because of their extreme shyness to interact with ordinary matter, it takes extraordinary ingenuity and humongous detectors to catch these ghostlike particles in earthly experiments. This was a rewarding endeavor and led to the discovery of neutrino oscillations -- the first ever laboratory evidence for physics beyond the Standard Model. The neutrino game is far from being over: rather this is just the beginning of a remarkable journey into uncharted land, with many current and upcoming experiments poised to make the big push to the unknown. We will discuss how these teeny-tiny neutrinos could help us unravel the well-kept secrets of the cosmos. In particular, we will highlight some recent exciting developments that have led to the birth of multi-messenger neutrino astronomy.