50 Years Since Our First Message to Aliens

In this episode, we pay tribute to the Arecibo Observatory. Once the largest single-aperture radio telescope on Earth, Arecibo was more than just a feat of engineering; it was a cultural icon and a frontline defender of our planet. From sending the first deliberate message to extraterrestrial civilizations to discovering the first planets outside our solar system, its legacy continues to shape the future of astronomy.

Arecibo taught us that the universe is full of signals—we just have to be quiet enough to hear them.