A collaboration between the Green Bank Telescope and Raytheon resulted in a detailed way to see the moon, asteroids, and other hazards near Earth.
, we take a close look at the science and technology at the heart of the defense industry—the world of soldiers and spies.in the mountains of West Virginia is home to one of the world’s largest radio telescopes: a white-paneled behemoth called the Green Bank Telescope whose dish is bigger than a football field and whose topmost point is almost as high as the Washington Monument’s.
At the meeting, Wilkinson met the director of NRAO, Tony Beasley, and Beasley did indeed want a partner—but not in timekeeping. He wanted a radar collaborator. “That is our core competency as a company,” says Wilkinson. “I just could not believe my ears.” “For radar, you’re worried about sending a signal and then receiving it,” says Patrick Taylor, head of NRAO’s and Green Bank Observatory’s joint radar division. “So you lose a lot of your power going out and then coming back again. … In that sense, you need really large telescopes. And the largest telescopes in the world are radio telescopes.” The array of telescopes that would catch the returning signal, conveniently, belongs to NRAO.
With the system in place, the joint team has since performed three kinds of tests: experiments involving the moon, an asteroid, and space debris. “Those are the three main fields that we want to look at,” says Taylor. “Planetary-scale bodies, like the moon; small bodies, like asteroids and comets, for planetary science and planetary defense; and space debris, for, essentially, safety, security, and awareness of what’s out there around the Earth.
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