Dark matter makes up about 85 percent of all matter in the universe. It neither emits nor absorbs light, making it invisible ...

Mars’ north polar vortex locks its atmosphere in extreme cold and darkness, freezing out water vapor and triggering a ...

The Anthony Ainley Master is finally in action figure alongside his most famous TARDIS, and a host of extras, exclusive to ...

In an early sign of the winter weather that's coming, the dreaded polar vortex is making news yet again. The polar vortex is "ramping up from its summer slumber," said meteorologist Judah Cohen in an ...

While many across the Lower 48 have been enjoying a relatively warm and dry start to autumn, Siberian snow has already been growing and may add a chill to your winter forecast. One of these key ...

It still feels summery in Mississippi with daytime highs in the 80s and relatively high humidity. But nights are getting a hint of a chill, and winter will be here before you know it. The polar vortex ...