Mitch and Tom are back with their adventures in the cosmos! This week they are asking the question: Where are the aliens?  Mitch outlines some of the most important theories to help answer this question in the form of the Drake Equation and the Fermi Paradox while Tom imparts theories explaining the absence of our extraterrestrial friends such as The Great Filter hypothesis. The boys explore the organisations such as METI and SETI whose job it is to find the answers! Music: EVA - 失望した