World's Largest Radio Telescope to Map 1 Billion Stars by 2029

By 2029, a remote Nevada desert will become home to humanity's most powerful window into deep space, capable of discovering a billion new radio sources in just five years.

Researchers at Caltech are breaking ground on the Deep Synoptic Array, a revolutionary radio telescope featuring 1,650 dishes spread across 120 square miles of desert near Great Basin National Park. To put that in perspective, New Mexico's famous Very Large Array uses just 27 dishes.

The DSA isn't just bigger. It's smarter, faster, and more sensitive than anything we've ever built.

"While all other radio telescopes combined have so far found about 20 million radio sources, the DSA will match that in the first day of operations," says Caltech astronomy professor Gregg Hallinan, who leads the project. By the end of its initial survey, that number will reach one billion new discoveries.

The array will help scientists unlock mysteries that have puzzled us for decades. Researchers plan to study fast radio bursts, those brief but powerful flashes from deep space, and investigate how dark energy is shaping the expansion of our universe.

Speed gives the DSA another crucial advantage. The telescope will process data in near-real-time, transforming radio astronomy from a slow sketch into an instant photograph of the cosmos.

Why This Inspires

What makes this project truly special is its commitment to radical openness. Every discovery, every data point, every cosmic photograph will be available to the public immediately, not locked behind academic paywalls or delayed by years of processing.

"We want the whole world to also have access to the data just as quickly as we do," explains project manager Katie Jameson. "The DSA functions like a photo lab that is developing these radio images in real time for all to use."

The team even found creative ways to keep costs down. They partnered with Fat Daddio's, a cake pan manufacturer, to produce thousands of specially shaped pans that convert electromagnetic waves to electrical signals. Sometimes the best innovations come from thinking outside the box.

The telescope's location in one of America's most remote desert valleys isn't just for dramatic views. It protects the sensitive instruments from radio interference that has plagued astronomers for decades, ensuring the clearest possible signals from billions of light years away.

In five years, we'll go from knowing about 20 million radio sources to understanding over a billion, with every citizen scientist, student, and curious mind invited to explore alongside professional astronomers.