NASA and the Italian Space Agency's Lunar GNSS Receiver Experiment succeeded in its first attempt to acquire Earth-based navigation signals from the moon on March 3, 2025. Credit: NASA / Dave Ryan ...
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Why GPS is more fragile than most people realize

GPS works by satellites broadcasting precise time signals, allowing receivers to calculate distance at the speed of light, ...
While serving on the National Security Council staff in the Biden administration, I was tasked with strengthening the resilience of U.S. critical infrastructure, namely its reliance on GPS for ...
The inaccuracy of the speedometers used by most vehicles, even those in cars with the coolest gauge clusters, is well known. The good news is that most speedometers report speeds higher than the ...
The country’s GPS systems might be more vulnerable than you think — and the stakes are high. A Global Positioning System failure could affect transportation, banking and emergency operations. But ...
Modern cars surround drivers with digital certainty, yet one of the most basic numbers on the dashboard is quietly biased in your favor. The speedometer is designed to err on the side of reading high, ...
In cases where GPS satellites may be degraded or unreliable, researchers from Sandia National Laboratories and Ohio State University are considering cellphone towers as alternative sources of signals ...