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From a remote valley in Northern California, Jill Tarter is listening to the universe. Her ears are 42 large and sophisticated radio telescopes, spread across several acres, that scan the cosmos for signals of extraterrestrial origin. If intelligent life forms do exist on other planets, and they try to contact us, Tarter will be among the first to know.
Are we citizens of Earth alone in the universe? It's a question that has long fascinated astronomers, sci-fi authors, kids with backyard telescopes and Hollywood executives who churn out spectacles about alien encounters. Polls have found that most Americans believe that some form of life exists beyond our planet.
"It's a fundamental question," said Tarter, the real-life inspiration for Jodie Foster's character in the 1997 movie "Contact." "And it's a question that the person on the street can understand. It's not like a ... super-collider or some search for neutrinos buried in the ice. It's, 'Are we alone? How might we find out? What does that tell us about ourselves and our place in the universe?'