Here on Earth, it might not matter if your wristwatch runs a few seconds slow. But crucial spacecraft functions need accuracy down to one billionth of a second or less. Navigating with GPS, for ...

When it comes to navigation in outer space, keeping precise time is incredibly important, that's why NASA needs to use ...

Nasa, in collaboration with the European Space Agency (ESA), has launched two state-of-the-art atomic clocks to the International Space Station (ISS) as part of the Atomic Clock Ensemble in Space ...

Vladan Vuletić with members of his Experimental Atomic Physics group. From left to right: Matthew Radzihovsky, Leon Zaporski, Qi Liu, Vladan Vuletić, and Gustavo Velez. Every time you check the time ...

What the Clock: Internet time servers are a critical part of the infrastructure used by companies and organizations that rely on atomic clocks to keep accurate time. A US agency responsible for ...