Australian radio astronomers searched for traces of cosmic catastrophes and created a technology that now carries half the planet's internet traffic.
In 1974, Stephen Hawking published a theory that upended our understanding of black holes: they don't just swallow matter, they evaporate, radiating energy. The smallest ones — proton-sized, mountain-massed — should have exploded over billions of years, leaving a characteristic radio burst. If Hawking was right, the universe is full of these tiny monsters dying right now somewhere between the stars. If not — an entire class of objects remains theoretical fantasy.
CSIRO — Commonwealth Scientific and Industrial Research Organisation, Australia's research giant with 6,400 employees across 55 sites, founded back in 1926 — decided to test Hawking's hypothesis. Radio astronomer John O'Sullivan, who earned his doctorate from the University of Sydney in 1974, led the team. The task looked simple only on paper: catch a millisecond pulse in an ocean of cosmic noise. O'Sullivan, together with colleagues J. P. Hamaker and J. E. Noordam, developed mathematical apparatus based on Stark and Fourier transforms to extract signal from chaos.
The black holes didn't turn up. Either there are too few of them, or they evaporate differently than Hawking predicted, or the radiation gets lost in background noise. The project shut down, leaving behind only a stack of scientific reports and a tool for processing distorted radio signals. O'Sullivan could have returned to less ambitious tasks, but the mathematics written for space was too good to gather dust on a shelf.
In the early 1990s, wireless networks were slow, finicky, and only worked within line of sight. Radio waves indoors bounced off walls, ceilings, furniture, creating multipath interference — the signal arrived via multiple paths simultaneously, overlapping with itself and turning into mush. Existing technologies either ignored the problem, losing speed, or demanded perfect conditions.
O'Sullivan realized: what interferes with Wi-Fi is the same problem as in radio astronomy. Reflected waves in a room behave like distorted cosmic pulses. The CSIRO team — O'Sullivan, Graham Daniels, John Deane, Diethelm Ostry, Terence Percival — adapted algorithms written for black holes to data transmission. They took orthogonal frequency-division multiplexing (OFDM) — a method where the signal is split into dozens of narrow frequency channels, each transmitting its own chunk of data — and added error correction with interleaving. The result: a system that didn't just tolerate reflections but used them.
On January 23, 1996, US Patent No. 5,487,069 titled Wireless LAN documented the combination of technologies that became the foundation of modern Wi-Fi. OFDM turned rooms from signal enemies into allies: the more reflections, the more paths for data transmission. Mathematics designed to catch the dying gasp of a black hole learned to punch through concrete office walls.
By the mid-2000s, Wi-Fi was everywhere: in laptops, smartphones, routers, printers. Standards 802.11a, 802.11g, 802.11n were built on OFDM, which meant — on the Australian patent. Apple, Microsoft, Intel, Dell, and dozens of other companies sold billions of devices without paying CSIRO a cent. The Australians decided it was time to make themselves heard.
In 2005, CSIRO filed lawsuits against 14 companies, demanding compensation for using the technology. Defendants built their defense: the patent is too broad, the technology is obvious, the Australians didn't invent anything. US courts — not the friendliest place for foreign plaintiffs, especially when corporations with budgets larger than small countries' GDPs sit on the other side. But CSIRO held firm: documentation from the black hole project, scientists' correspondence, lab records from the 1990s proved the idea was born in Australia, not Silicon Valley.
In 2009, 14 companies agreed to settle and paid $205 million. That was only the first wave. In 2012, the next batch of defendants — Broadcom, T-Mobile, AT&T, Lenovo, Sony, Acer, Verizon, and others — added another $229 million. The total exceeded $430 million, not counting licensing deals made behind closed doors. For CSIRO it was triumph; for the industry — a reminder that fundamental science sometimes comes back through the courts.
John O'Sullivan didn't remain in the shadow of patent wars. In 2000, he became vice president of Radiata, an Australian startup developing chips for wireless networks based on OFDM. A few months later, Cisco bought Radiata for $295 million — a deal that turned a group of astronomer-engineers into millionaires and brought Cisco key patents for future router generations.
Awards came in succession. In 2009, O'Sullivan received the Prime Minister's Prize for Science — Australia's highest scientific honor. In 2012, the European Patent Office awarded him the European Inventor Award in the "non-European countries" category. In 2017 came the IEEE Masaru Ibuka Consumer Electronics Award — recognition from the engineering community that his work changed not just science but the daily lives of billions. O'Sullivan transformed from black hole hunter into the father of a technology without which the modern world is unthinkable.
His career — an illustration of how fundamental research converts into commercial success. Not immediately, not directly, often through accidents and side effects. But it converts.
Wi-Fi was born from failure, but this failure was productive. O'Sullivan searched for black holes not because someone promised him patents and money, but because he wanted to test Hawking's theory. He didn't find them, but he wrote code that later proved useful for a completely different task. This isn't a story about foresight or strategic planning — it's a story about how side effects of fundamental science are sometimes more important than direct results.
Today, more than half the planet's mobile traffic passes through Wi-Fi. YouTube, streaming, video calls, smart homes, online shopping — all of it rests on technology developed to search for cosmic objects that probably don't exist in the necessary quantities. An Australian organization founded almost a century ago received hundreds of millions of dollars for mathematics written for a telescope. The black holes never turned up, but their search changed the world more powerfully than their discovery could have.