When you buy through links on our articles, Future and its syndication partners may earn a commission. The September equinox is the official beginning of astronomical fall in the Northern Hemisphere.

September's new moon will be a special event this weekend, as it rises amid a partial solar eclipse — visible to only 0.2% of the world's population — and leads us all into the autumnal equinox. When ...

Twice a year, Earth tilts just right, giving nearly equal amounts of day and night across the globe. One of those moments arrives Monday: the fall equinox, officially ushering in the arrival of autumn ...