Expect an uptick in aurora sightings near the spring equinox on March 20, as celestial geometry swings in favor of ...

The Northern Hemisphere’s spring — or vernal — equinox can land between March 19 and 21, depending on the year. Its fall – or autumnal — equinox can land between Sept. 21 and 24.

From left to right, in the northern hemisphere, there is summer, fall, winter, and spring. Credit: NASA RELATED: The science and celebration of the winter solstice ...

Solar seasons are based on sun angle and strength and gives us insight into daylight length as well as to where the sun will ...

Rutgers University Global Snow Lab, accessed Dec. 6, Spring northern hemisphere snow extent NASA Langley Research Center's Atmospheric Science Data Center, April 20, 2020, Ice-albedo feedback in the ...