Pitkanen goes into considerable length and analysis in her study about a 1974 transmission (known as the “Arecibo” message) put together by Carl Sagan and his colleagues. It was sent into space through radio waves during a special event in Puerto Rico to commemorate the remodeling of the Arecibo radio telescope. It was the most potent transmission ever sent into space on purpose. It consisted of a pictorial message depicting our planet’s position in our universe, the fundamental precepts of our mathematics and science, and the NASA transmitter used to transmit the signal in the desperate hope that intelligent aliens would interpret this. It was directed at a star cluster located approximately 25,000 light-years away.
Twenty-seven years later, in 2001, a pattern in the shape of a response to the 1974 broadcast emerged directly near Britain’s largest telescope, the Chilbolton, and observatory, which houses the world’s largest fully steerable weather radar.