Dark matter is supposed to be everywhere, threaded through the Milky Way and outnumbering ordinary matter by a wide margin. Yet after decades of effort, nobody has caught it directly. That gap between ...

On Monday afternoon President Donald Trump and CIA Director John Ratcliffe hinted at technology that had helped locate a downed American Air Force officer hiding in a mountain crevice in southern Iran ...

Scientists have found a way to identify magnetic fields on the far side of the sun, a region that cannot be seen from Earth. By studying sound waves moving through the star, they can now detect not ...