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  • The Arecibo message was broadcast into space a single time (not repeated) via frequency modulated radio waves at a ceremony to mark the remodeling of the Arecibo radio telescope on 16 November 1974. It was aimed at the globular star cluster M13 some 25,000 light years away because M13 was a large and close collection of stars that was available in the sky at the time and place of the ceremony.The message consisted of 1679 binary digits, approximately 210 bytes ...
  • Those who propose, or oppose, sending METI must contemplate the Hamlet-like question: “To send or not to send?”
  • 400 years were passed, Catholic church publicly recanted and rehabilitated of Giordano, and now scientists try to make SETI in hope to detect other inhabited Worlds ... Our visit at 64-m radio telescope which is sited in Bear Lakes, 30 km North-East from Moscow, and narrate about Dutch survey squad, which is making documentary about Sending and Searching for Interstellar Radio Messages.
  • Active SETI (Active Search for Extra-Terrestrial Intelligence) is the attempt to send messages to intelligent aliens.
  • Goldstone antennas have also been used as sensitive radio telescopes for such scientific investigations as: mapping quasars and other.
  • The Arecibo Observatory is a radio telescope near the city of Arecibo in Puerto Rico. It is operated by Cornell University under cooperative agreement with the National Science Foundation. The observatory is also called the National Astronomy and Ionosphere Center, although "NAIC" more properly refers to the organization that runs both the observatory and associated offices at Cornell. The observatory's 305 m (1,001 ft) radio telescope is the largest single-aperture telescope ever constructed.
  • The Yevpatoria RT-70 radio telescope is an RT-70 radio telescope and planetary radar at the Center for Deep Space Communications, Yevpatoria, Crimea, Ukraine.
  • The Maya is a Mesoamerican civilization, noted for the only known fully developed written language of the pre-Columbian Americas, as well as for its art, architecture, and mathematical and astronomical systems.