No matter whether you go by the astronomical calendar or the meteorological calendar, both agree that the country has now entered fall. The autumnal equinox officially occurred on Monday at 2:19 p.m., ...

2026 is expected to be a big year for space enthusiasts and can expect 13 full moons, 3 supermoons and multiple eclipses. Here's what to know.

Calendars across the Northern Hemisphere say winter will begin on Dec. 21, but for meteorologists, the start of the season happens three weeks earlier on Dec. 1. The reason behind the discrepancy is ...

The next total solar eclipse is not just another date on the astronomy calendar, it is set to deliver the longest stretch of daytime darkness most of us will ever see. Over a path that cuts across ...