Atomic clocks are the basis upon which a second is defined. But there is a new kid on the block, the optical clock, which ...

Scientists have developed a "microcomb chip" — a 5 millimeter (0.2 inches) wide computer chip equipped with tiny teeth like those on a comb — that could make optical atomic clocks, the most precise ...

The clock hands are set by the Bulletin of the Atomic Scientists, a group formed by Manhattan Project scientists at the University of Chicago who helped build the atomic bomb but protested using it ...

ESA's Atomic Clock Ensemble in Space (ACES) has arrived at NASA's Kennedy Space Center in Florida, United States. This ...

The hands on the Doomsday Clock are set based on research by the Bulletin of Atomic Scientists. Follow Tech Insider: On Facebook More from Science The Doomsday Clock is a metaphorical indicator of ...