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SETI

At the core of our explorations is the quest to know if life exists beyond Earth. The Planetary Society is a leader in the search for life on other worlds, whether intelligent or microbial. Our active projects: SETI Optical Telescope - Looking for laser signals beamed across the vastness of space. SETI Radio Searches - Huge radio dishes sift through nature's random noise for beacons from other civilizations.

SETI Projects

Project Updates

Astropulse: A Fresh Look at the Skies in Search of E.T.

If you were a member of an alien civilization trying to communicate across the immeasurable distances of space, how would you go about it?

SERENDIP Takes a Great Leap Forward

Just when SETI@home is celebrating its 10th anniversary, its older brother, Project SERENDIP, is getting a general makeover.

Quake Catcher Network: SETI@home Spinoff Tracks Earth-Shakers

One of the youngest off-springs of SETI@home has been getting a great deal of attention recently. Known as the Quake-Catcher Network (QCN), this distributed computing project makes use of thousands of volunteers' computers to locate and track earthquakes.

From SETI@home to Hominid Fossils: Citizen Cyberscience Reshapes Research Landscape

In the beginning was SETI@home, the first large-scale volunteer computing project, launched in 1999 with seed money from The Planetary Society. Within months the project had millions of volunteers around the world joining to form the most powerful computer network ever assembled.

Planetary System Detected Around SETI@home Target Star

A fully formed planetary system, with five different planets of varying sizes and orbits has been found, orbiting a star more than 40 light years away. Significantly, it is the very same star, 55 Cancri, that was one of the chief targets of the SETI@home reobservations at Arecibo in March 2003.

Planetary Society's Optical SETI Telescope Offers Online View of Night sky

The Planetary Society's Optical SETI Telescope was built solely to search for possible light signals from alien civilizations. Located at Oak Ridge Observatory in Harvard, Massachusetts, it is the first dedicated Optical SETI telescope in the world. Its 72-inch primary mirror also makes it larger than any optical telescope in the U.S. east of the Mississippi river.

Keeping an Ear to the Center of the Galaxy, Southern SETI Prepares for Great Leap Forward

Located in the southern part of the continent of South America, Southern SETI has a continuous view of densest star-fields in our galaxy. And, since 1990, it has been sponsored and supported by The Planetary Society.

With Observations in Full Swing, Team Prepares to Remove "Sunglasses" from Telescope

Winter time is observing time at the Oak Ridge Observatory in Massachusetts, when humidity is low and the sky is often clear. And so it has been for the Optical SETI telescope, which opened its doors in April 2006.

Telescope Goes "Semi-Automatic"

Andrew Howard talks about the "semi-automated" nature of the observations from the Optical SETI telescope.

With Multi-Beam Receiver, SETI@home Takes Giant Step Forward

In seven intense days spent at the radio telescope Chief scientist Dan Werthimer and his colleagues completely overhauled the way SETI data is gathered at Arecibo, and ensured that SETI@home will henceforth enjoy the benefits of gathering data with the most advanced equipment anywhere in the world.

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