Satellite data reveal that a weak region in Earth's magnetic field has grown by an area roughly half the size of continental ...

A rare hurricane that raged high above Earth's North Pole in 2014 packed a surprising punch, and may be even stranger than scientists first thought. The phenomenon, called a "space hurricane," ...

Mars’ north polar vortex locks its atmosphere in extreme cold and darkness, freezing out water vapor and triggering a dramatic rise in ozone. Scientists found that the lack of sunlight and moisture ...