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GPS is a U.S.-operated satellite constellation providing global positioning, navigation, and timing services for military and civilian users.
No evidence-backed relationships are recorded.
Telstra's external audit traces the July 8 outage that hit nearly nine million customers to one unpatched GPS card holding stratum 1. Operators who change stratum assignments without review can have one bad receiver set every downstream clock.
Reality
A group at the University of Science and Technology of China combined quantum measurement with relativity's speed limit to test where a device claimed to be, and pinned it to a 74.3-meter stretch between two stations.
Reality
Northrop's PGK E5 puts anti-jamming into a 155 mm guidance kit that keeps the same fit and form as fielded stock. First deliveries are expected in early 2028, and the accuracy claim comes from Northrop's own testing.
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TERN says its Independently Derived Positioning System will keep Army vehicles located when satellite signals are jammed or spoofed. What the announcement leaves out is any accuracy figure, any vehicle count and any Army voice.
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Jongmin Lee's group at Sandia cut the optical power needed to guide cesium atoms to between a quarter and a sixth of earlier approaches, using a fiber 420 nanometers across, in work aimed at navigation when GPS is jammed.
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TERN's $11.26 million contract puts offline positioning and fleet-health monitoring on sensors the Army already owns, on a premise its president states plainly, that battlefield GPS can no longer be assumed.
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A Geophysical Research Letters team paired aurora cameras with ground receivers across the US and Canada, and found hours of amplitude scintillation and 10-metre positioning error in mid-latitudes long treated as quiet.
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A permanent base at the lunar south pole will put landers, rovers and crews on the same terrain. Knowing where each of them is has to come first. The satellites meant to answer that start launching in early 2027.
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In three days the FALCON payload refined orbits for more than 200 objects with no help from the ground, working against a 20,000-object catalog. The harder question is where the landmarks come from past Earth orbit.
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NASA's FALCON experiment fixed a spacecraft's position by matching star-tracker images against an onboard catalog of 20,000 objects, and corrected 200 of their orbits in three days.
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