SETI is an acronym for the Search for ExtraTerrestrial Intelligence.

SETI searches are often performed in the radio part of the electromagnetic spectrum using large radio telescopes and specialised correlators and signal processing algorithms.

One of the more popular SETI searches has been enabled via the SETI@home screen saver.

SETI@HOME screensaver
A screen image of the SETI@home screen saver.
Credit: SETI@home

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