search, of course, has traditionally played a larger role in popular culture than in the halls of academia. But over the last 40 years, the question of whether we are alone in the universe has formed a new field in the sciences. Astrobiology, the study of life in space, is no longer relegated to the stuff of science fiction and alien enthusiasts. “There are a lot of variables involved in knowing if there’s life out there, where it would be, and how prevalent it would be,” says Curtis C. Mead, a…
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