Imaginea Astronomica a Zilei

Descopera cosmosul! Each day a different image or photograph of our fascinating universe is featured, along with a brief explanation written by a professional astronomer.

May 17, 1999
See Explanation.  Clicking on the picture will download 
 the highest resolution version available.

How to Cauta for Aliens
Credit: [email protected], UC Berkeley SETI Team

Explicatie: (Edit) "Mom, can I use our computer to search for aliens?" Last week, the [email protected] project released free software that enables many home computers to search for signals from intelligent extra-terrestrials. These signals may have already been detected by the huge Arecibo radio telescope, but gone unnoticed due to the large amount of data that has been accumulating. SETI enthusiasts David Gedye and Craig Kasnoff realized that the enormous amount of computing power in people's homes might help. The resulting software can work as a screensaver and so after downloading a chunk of data, will only search for alien signals when the computer is otherwise idle. When running, the software will generate images like that shown above: a changing Fast Fourier Transform plot highlighting strong periodic signals. Although more likely to find false-alarms like known Earth-orbiting satellites, if your computer finds a true ET signal, [email protected] promises that you will be given due credit.

Imaginea de maine: A Busy Sky


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Autori & editori: Robert Nemiroff (MTU) & Jerry Bonnell (USRA)
Reprezentanti tehnici NASA: Jay Norris. Specific rights apply.
Un serviciu al: LHEA at NASA/ GSFC
& Michigan Tech. U.