Scientists Seeking Life on Mars Heard a Signal That Hinted at the FutureIn 1924, a radio receiver built for the battlefields of World War I tested the idea that humans were not alone in the solar system, heralding a century of searches for extraterrestrial life.
Source: Scientists Seeking Life on Mars Heard a Signal That Hinted at the Future (https://www.nytimes.com/2024/08/20/science/mars-aliens-radio-signals.html)