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

Mars mania gripped the world in 1924.

View in browser|nytimes.com 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. Señor Salme The source of the astonishing signal they received is still a mystery. → Sign up for Science Times Get stories that capture the wonders of nature, the cosmos and the human body. Get it in your inbox Need help? Review our newsletter help page or contact us for assistance. You received this message because you signed up for updates from The New York Times. To stop receiving From The Times, unsubscribe. To opt out of other promotional emails from The Times, including those regarding The Athletic, manage your email settings. To opt out of updates and offers sent from The Athletic, submit a request. Subscribe to The TimesGet The New York Times app Connect with us on: Change Your EmailPrivacy PolicyContact UsCalifornia Notices The New York Times Company. 620 Eighth Avenue New York, NY 10018