Astronomer Dr. Frank Drake, one of the founders of SETI (the Search for Extra-Terrestrial Intelligences), dies at the age of 92. His fascinating with searching for life on other worlds began at a young age, and defined much of his life and career. In the 1960s, as part of a lecture, he devised the Drake Equation, a formula for calculating a very rough estimate of the possible number of civilizations capable of communicating across interstellar distances; this equation has been debated and challenged over the years, as well as gaining mainstream recognition after being cited in popular science programming (such as Carl Sagan’s Cosmos) and science fiction as well. In the 1970s, Drake and Sagan joined forces to create the “messages in bottles” affixed to the earliest space probes expected to break free of the solar system, including the Pioneer plaques and the golden records attached to Voyagers 1 and 2.
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