New clock would stay accurate for billions of years

A proposed new time-keeping system could make atomic clocks look positively erratic, staying accurate to one twentieth of a second over 14 billion years - the age of the universe.

Self-guided bullet hits target a mile away

Two Sandia National Laboratories engineers - and hunters - have developed a dart-like, self-guided bullet accurate over a distance of a mile.

European satellite launch heralds more accurate GPS

The European Space Agency has launched the first two Galileo satellites which will give Europe its own satellite navigation system for the first time.

New evaluation determines world's most accurate clock

A caesium fountain clock that keeps the United Kingdom's atomic time is now the most accurate long-term timekeeper in the world, according to a new evaluation - twice as accurate as was previously believed.