The NorthernHemisphere’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.
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 NorthernHemisphere. In October ...
(AP) — The winter solstice is Saturday, bringing the shortest day and longest night of the year to the NorthernHemisphere — ideal conditions for holiday lights and warm blankets. For those ...