Europe’s New GPS System Is Already Broken!... Can We Fix It?

On Galileo's 18 GPS satellites, there are 9 broken atomic clocks. How do we fix satellites when they break?
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Galileo satellites experiencing multiple clock failures
"The onboard atomic clocks that drive the satellite-navigation signals on Europe's Galileo network have been failing at an alarming rate. Across the 18 satellites now in orbit, nine clocks have stopped operating."
Repairing the Hubble Space Telescope: The Tools Astronauts Used
"When NASA launched the Hubble Space Telescope on April 24, 1990, the agency already intended to send astronauts up to change out the observatory's scientific instruments from time to time, keeping it at the forefront of science."
Kepler's Second Light: How K2 Will Work
"In May, Kepler lost the second of four gyroscope-like reaction wheels, ending new data collection for the original mission. A new mission concept, dubbed K2, would continue Kepler's search for other worlds, and introduce new opportunities to observe star clusters, young and old stars, active galaxies and supernovae."
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Special thanks to Amy Shira Teitel for co-hosting and co-writing this episode of DNews!
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Co-Written by: Trace Dominguez