Wi-Fi Was Invented by Astronomers

In the 1970s, a team at Australia's national science agency, CSIRO, embarked on a quest to find the death cries of the cosmos. Inspired by Stephen Hawking's theories, radio astronomer Dr. John O'Sullivan and his colleagues were searching for the faint, fleeting radio pulses emitted by evaporating mini black holes. They knew that any such signal traveling across the galaxy would become distorted and "smeared out" by the time it reached Earth, making it nearly impossible to detect.

To solve this astronomical puzzle, the team developed a brilliant mathematical tool. Their technique could take a messy, scattered radio signal, account for all the echoes and distortions, and reassemble it into a single, sharp pulse. This was essential for finding a tiny cosmic whisper amidst a universe of static. The problem, however, was that they never found any evaporating black holes, and for a time, their ingenious solution was a tool without a purpose.

Years later, as the world struggled to make wireless indoor networks reliable, the CSIRO team had a breakthrough realization. The smearing effect they tried to correct for in space was remarkably similar to how radio waves get distorted inside a building, bouncing off walls, furniture, and people. Their technique for sharpening a signal from a distant black hole was the perfect solution for cleaning up a messy indoor signal. This astronomical innovation was patented and became a core component of the stable, high-speed wireless local area network (Review), or WLAN, that we now know as Wi-Fi.