It's not hidden from the sun. It's hidden from our view. That's because the Earth and moon are in what's called synchronous rotation. Which means every time the moon rotates once on its axis ...

Using the European Southern Observatory's Very Large Telescope in Chile, astronomers have made detailed observations of the mysterious exoplanet ...

Motor rotation is developed in an AC induction motor through the effects of a moving magnetic field. As the speed of the rotor drops below the stator speed, or synchronous speed, the rotation rate of ...