The Atomic Clock Ensemble in Space (ACES) is a European Space Agency (ESA) mission that will generate a time signal with unprecedented accuracy and then transmit it via laser to nine ground ...

An atomic clock is the most accurate type of clock in the world â it keeps time using the vibrations of atoms, usually cesium-133 or rubidium-87, as its timekeeping element.

There are hundreds of atomic clocks in orbit right now, perched on satellites all over Earth. We depend on them for GPS location, Internet timing, stock trading and even space navigation.

The US House committee in charge of space just approved a bill to establish a new time zone on the moon, where time moves a little bit faster than here on Earth.

The Atomic Clock Ensemble in Space (ACES) is a European Space Agency (ESA) mission that will generate a time signal with unprecedented accuracy and then transmit it via laser to nine ground ...