A mysterious signal, and a century-long search for alien life

Mars mania gripped the world in 1924.
From The Times

August 24, 2024

A radio receiver built for the battlefields of World War I ended up serving as a tool for scientists seeking life on Mars when Earth had a "close-up" moment with the planet in 1924.

An illustration showing people dressed in 1920s-style clothing on a street surrounded by tall buildings looking at a red orb through a telescope.

SeƱor Salme

The source of the astonishing signal they received is still a mystery.

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