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SETI home: Internet Distributed Computing for SETI

Evo-SETI: A Mathematical Tool for Cladistics, Evolution, and SETI

The discovery of new exoplanets makes us wonder where each new exoplanet stands along its way to develop life as we know it on Earth. Our Evo-SETI Theory is a mathematical way to face this problem. We describe cladistics and evolution by virtue of a few statistical equations based on lognormal probability density functions (pdf) in the time. We call b-lognormal a lognormal pdf starting at insta...

Implications of Directed Energy for SETI

We compute the detectability of directed energy sources from distant civilizations that may exist. Recent advances in our own directed energy abilities allow us to foresee our own capability that will radically change our ability to broadcast our presence and hence allow us to ponder the reverse case of detection. In the next few decades we will evolve to the point where we will be able to prod...

Quantifying SETI

It should come as no surprise to readers of QEX that the scientific Search for Extra-Terrestrial Intelligence (SETI, sometimes called the search for the ultimate DX) was initiated by, and is still largely conducted by, radio amateurs. The world’s hams instinctively understand the nature of electromagnetic communications, as well as the nature of the “free space” (or “aether”) that fills the voi...

Project SETI: Machine Recognition of Squiggles in SETI Signal Data

The singular question, are we alone?, has boggled scientists for centuries. The SETI Institute operates the Allen Telescope Array (ATA) to observe star systems for radio signals which may provide evidence of extraterrestrial intelligence. Signal events that maintain an intensity above an empirically-set threshold across all frequencies are converted into spectrogram images through a sliding-win...