When NASA’s Artemis II spacecraft carried four astronauts around the Moon earlier this year, the world’s largest fully steerable radio telescope was quietly watching from a quiet valley in West Virginia. The Green Bank Telescope tracked the Orion capsule across 213,000 miles of empty space with a precision that would embarrass most speedometers and what it produced isn’t just an engineering triumph. It’s a glimpse of how the world’s most sensitive ears are becoming indispensable to the future of human spaceflight.
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