Given how many candidate planets Kepler has identified, and the recently announced estimate that billions of habitable planets may exist in the Milky Way alone, scientists are understandably excited about the prospect of finding alien life. They’re so excited, in fact, that they made a plea to Congress this week to embark on the next phase of searching for life.
Sara Seager, MIT’s exoplanet expert who came up with her own equation to express the probability of finding extra-terrestrial life, spoke at the “Astrobiology: The Search for Biosignatures in our Solar System and Beyond” hearing of the House Committee on Science, Space and Technology and argued that while we have some technology capable of detecting candidate planets and other life forms, we need more. “This is the first time in human history we have the technological reach to find life on other planets,” she said. “People will look back at us as the ones who found Earth-like worlds.” NASA’s head of astrobiology seconded that, saying that humans finally have the means to gather data about other life forms in the universe, which means it’s incumbent upon us to do so.