Physicists at the University of Toronto have developed technology that could power a new generation of optical atomic clocks ...

Reaction wheels are useful things, typically used by satellites to keep themselves oriented the right way up in space. Turning the reaction wheel creates an equal and opposite torque in the spacecraft ...

Ukraine war latest: We have identified two suspects behind railway bombing, Poland says | Ukraine war latest Poland's prime minister says two Ukrainians who "collaborated" with Russian intelligence ...