When is the next leap year? Here are some fascinating leap year facts, along with all the details about why leap day always falls on Feb. 29.

A timelapse of the 2023 annular solar eclipse as seen from outside Great Basin National Park in Ely Nevada. Captured with a Unistellar eQuinox 2 smart telescope with Smart Solar Filter. Credit: Space.

"Witnessing the 2026 solar eclipse from a cruise ship offers an unparalleled vantage point, all while enjoying the serene ...

The moon's ascending node (the point in the sky where its orbit crosses the ecliptic from south to north) is moving westward ...