The autumnal equinox arrives Monday, marking the start of the fall season for the Northern Hemisphere and the spring in the ...

Day and night will get equal time for a brief moment Monday as much of the world heads into fall. The autumnal equinox marks ...

Roughly every 378 days, Saturn swings into opposition, appearing up to 30% brighter and staying visible from dusk until dawn. The night sky is full of quiet wonders, but once a year Saturn steps into ...

Fall is coming to Arizona as the autumnal equinox arrives on September 22, 2025. The equinox brings nearly equal day and ...