The Blue Ghost private space probe, part of NASA's CLPS program, continues its mission to explore the Moon. During recent maneuvers, the spacecraft transmitted new footage from the back of the ...

For decades, GPS has been the backbone of modern navigation, guiding everything from airplanes to food delivery drivers. But ...

An on-orbit PNT architecture that features a “military only” future GPS satellite constellation does not create resiliency. GPS is one of the most successful DOD programs of our time — one ...

GPS IIF satellite vehicles continue to modernize the GPS constellation while bringing new capabilities to both military and civilian users. GPS IIF SVs will bring into service the dedicated civil ...

A system that improves the accuracy of the GPS satellite navigation system. A satellite's positioning accuracy is impeded by errors in its clock and signal delays caused by atmospheric conditions.