Obituary | The “Are we alone?” equation

Frank Drake believed that the universe had to contain other intelligent beings

The intrepid radio astronomer died on September 2nd, aged 92

APTOS, CA - FEBRUARY 27: Dr. Frank Drake, the founder of SETI (Search for Extraterrestrial Intelligence), poses for a portrait at his home in Aptos, California, Friday, February 27, 2015. Dr. Drake also created the Arecibo Message - a simple binary encoded message broadcast into space by the Arecibo radio telescope in Puerto Rico in 1974. The message encodes several things: the numbers 1 to 10, the basic chemistry of life on Earth, the double helix structure of DNA, Earth's population, a graphic of the Solar System, a human figure, and a graphic of the Arecibo radio telescope and it's dish' dimensions. (Photo by Ramin Rahimian for The Washington Post via Getty Images)

It was not something Frank Drake set out to do, but it seemed pretty useful. In 1961 he was drawing up a list of topics for a conference he had convened at the National Radio Astronomy Observatory at Green Bank, West Virginia. This would gather in every scientist in the world who cared about intelligent life elsewhere in the universe; about 12 people, by his reckoning. One of them was researching what dolphins said to each other. His own question went somewhat further: whether there were civilisations beyond our solar system, and what they might be trying to say.

This article appeared in the Obituary section of the print edition under the headline “The “Are we alone?” equation”

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