For decades, the moon's subtle gravitational pull has posed a vexing challenge—atomic clocks on its surface would tick faster than those on Earth by about 56 microseconds per day. This extremely small ...

FARGO — Here, literally, is a minute detail that matters, even if it is only a fraction of a second. At the recent General Conference on Weights and Measures in Paris, representatives from world ...

Universal Time (UT), adopted in 1928 by the International Astronomical Union, is the time standard used in astronomical almanacs, referencing the 0° longitude meridian (Greenwich). For high precision, ...

Geneva, 19 November 2015 – The ITU World Radiocommunication Conference (WRC-15), currently in session in Geneva from 2 to 27 November, has decided that further studies are required on the impact and ...