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Pulsar Navigation: Mining Our Datasets

Science fiction dealt with interstellar navigation issues early on. In fact, Clément Vidal's new paper, discussed in these pages yesterday, notes a George O. Smith story called "Troubled Star," which originally ran in a 1953 issue of Startling Stories and later...

Detection Possibilities for Optical SETI

The Laser SETI campaign we looked at on Friday is one aspect of a search for intelligent life in the universe that is being addressed in many ways. In addition to optical methods, we look of course at radio wavelengths, and as we begin to characterize the atmospheres...

New Dip for Boyajian’s Star

Twitter action has been fast and furious with this morning's news of the first clear dip in light from Boyajian's Star (KIC 8462852) since the Kepler data. #TabbysStar IS DIPPING! OBSERVE!! @NASAKepler @LCO_Global @keckobservatory @AAVSO @nexssinfo @NASA @NASAHubble...

Citizen SETI

I love watching people who have a passion for science constructing projects in ways that benefit the community. I once dabbled in radio astronomy through the Society of Amateur Radio Astronomers, and I could also point to the SETI League, with 1500 members on all...

SETI in the Anthropocene

Have we, as some have argued, entered a new 'age of humanity,' the so-called Anthropocene? The notion is controversial in many quarters, but it addresses the growing concern about our human influence on the Earth and the nature of planetary change. David Grinspoon's...