Over the next 15 years, a unique spiral formation thousands of kilometres wide will spring up across the deserts of southern Africa. This installation of hundreds of satellite dishes, coincidentally reminiscent of our own spiral galaxy, will be searching the skies for radio signals from the very furthest reaches of the universe. On the other side of the Indian Ocean in Australia, a similar set of dishes will have appeared alongside millions of radio antennas arranged in clusters. And beneath this multicontinental construction will run thousands of kilometres of optical cable carrying, in total, hundreds of times more data each day than the entire global internet does now.
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