NASA's Unexplained Files

NASA's task of reaching beyond the bounds of Earth has uncovered disturbing anomalies that have perplexed even the finest scientific minds. Science Channel digs into the space agency's archives to reveal countless mysteries and unusual encounters, discoveries and sightings. Each hourlong episode scrutinizes evidence, explores possible explanations, and considers testimony from NASA insiders, scientists, astronauts and others who have witnessed the strange phenomena. The stories are made all the more unusual since they come from the most credible scientific organization in the world.