Welcome back to A Brief-ish History of SETI, where we examine the major milestones and foundational principles that have defined the Search for Extraterrestrial Intelligence (SETI). In part I , we examined the purpose and motivations behind this field of study, as well as how Fermi's big question ("Where is everybody?") helped define the challenges it entails. We also looked at some of the earliest experiments and how they reflected a growing sense of curiosity about the cosmos and our place in it. Today, we'll take a look at what is arguably the first SETI survey ( Project Ozma ) and its enduring legacy. In addition to laying the groundwork for future SETI experiments, the project's leader, Professor Frank Drake (considered the "father of SETI" for his pioneering work), would also propose an equation that remains a foundational principle to the field.…