
Our current efforts to smoke out extraterrestrial life are almost always focused on searching for messages beamed across space, which would miss a civilization that is not actively seeking contact, as some of our earth folk do.
David Aguilar, Harvard-Smithsonian Center for Astrophysics director of communications, said: "We may pick up spurious signals from people that never meant for us to hear them and get an inkling that something's going on."

A telescope under construction in Australian will avoid most terrestrial radio interference. The project will detect signals within roughly 30 light years of earth (about 1,000 stars).
This project will be rolled out right here in Seattle, at a conference of the American Astronomical Society this Wednesday.
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