atomic clock that measures an atom's neutron orbit instead of the electron's flight path. This method is apparently accurate to 19 decimal places, with several lasers shifting electrons in a certain way, allowing Professor Victor Flambaum to measure the "pendulum" motion of the neutron. It's purportedly close to 100 times more precise than its predecessors -- all with no freezing involved. These existing atomic clocks may be accurate beyond 100 million years, but for this new breed of hyper-accurate timekeeping, you'll only need to reset the clock once every 14 billion years. And we have no idea how they calculated that.