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One woman watches as another examines with a magnifying glass an ornate, decorative image on a printed page

Primary Sources in the Science Classroom: Signals from Mars? Venus?

Posted by: Cheryl Lederle

Tesla, Guglielmo Marconi, and Thomas Edison were among the respected scientists who believed one of our neighbors was trying to contact us. A news article "Hello, Earth! Hello!" published on March 18, 1920, details the history of signals, possibly electromagnetic, picked up by Marconi and verified by scientists around the world, including Edison and Tesla. All three agreed the signals were deliberately sent from another planet. Based on the information they had, this was a realistic inference.