Decoding the world's largest search for alien life

Combining technology and astronomy to decode signals from space, the SETI program is the largest scientific effort to search for intelligent life beyond Earth.

1. SETI stands for Search for Extraterrestrial Intelligence. This phrase means “Search for extraterrestrial intelligence” in English. Photo: Pinterest.

2. Originated in the 1960s. The SETI project began with radio astronomy observations, notably the Project Ozma experiment in 1960. Photo: Pinterest.

3. Use giant radio telescopes. SETI operates or collaborates with many observatories such as Arecibo, Green Bank and the Allen Telescope Array. Photo: Pinterest.

4. Focus on searching for artificial signals. The program's main goal is to detect radio waves or laser signals originating from extraterrestrial civilizations. Photo: Pinterest.

5. Community participation. SETI@home once allowed users around the world to contribute computing power from their personal computers. Photo: Pinterest.

6. Famous for the “Wow!” signal. In 1977, a mysterious 72-second radio signal was detected, which remains unexplained to this day. Photo: Pinterest.

7. Not just relying on radio waves. Today, SETI also looks for light signals, examining spectra and data from optical telescopes. Photo: Pinterest.

8. Considered a long-term project. SETI has no end date, as the search for extraterrestrial life is considered a mission of the century. Photo: Pinterest.

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