The winter solstice is today, bringing the shortest day and longest night of the year to the Northern Hemisphere.

The winter solstice is Saturday, bringing the shortest day and longest night of the year to the Northern Hemisphere — ideal ...

(Stephen Lam/San Francisco Chronicle via AP, File) The winter solstice is Saturday, bringing the shortest day and longest night of the year to the Northern Hemisphere — ideal conditions for ...

The winter solstice is Saturday, bringing the shortest day and longest night of the year to the Northern Hemisphere. The ...

More information: Joonsuk M. Kang et al, Anthropogenic Aerosols Have Significantly Weakened the Regional Summertime Circulation in the Northern Hemisphere During the Satellite Era, AGU Advances ...

People are gathering at Stonehenge and elsewhere across the northern hemisphere to mark the start of astronomical winter.

of having a round-the-clock look at all the airspace of the northern hemisphere, looking for potential threats heading America's way. The NGPs are, essentially, satellites, and they'll be placed ...

The concentration of 239+240 Pu activity turned out to be much higher in the Northern than the Southern Hemisphere, which reflects an uneven deposition of Pu coming from nuclear weapon tests ...

In May, NOAA issued a rare severe geomagnetic storm warning — it was the strongest storm in more than two decades, producing light displays across the Northern Hemisphere. And in October ...

When does winter start in 2024? Here's the science of the winter solstice, and why its the shortest day of the year in the Northern Hemisphere. When you purchase through links on our site ...

In May, NOAA issued a rare severe geomagnetic storm warning — it was the strongest storm in more than two decades, producing light displays across the Northern Hemisphere. In October ...