Astronomer Avi Loeb returns to the Commonwealth Club to answer some of the biggest questions facing humankind: How do we prepare ourselves for interaction with interstellar extraterrestrial life? And can our species itself become interstellar? Loeb, the longest-serving chair of Harvard’s Astronomy Department, shook the scientific community when he theorized that our solar system had been visited by a piece of advanced alien technology from a distant star. The object, dubbed ‘Oumuamua', sparked worldwide discussions and arguments.
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