Two ESA spacecraft, Hera and Europa Clipper, are poised to fly through the long tail of interstellar comet 3I/ATLAS, a new paper finds.

When does daylight saving time end in 2025? Here's a look at when the time changes this year, and why we change our clocks in the first place.

Mayan language experts have decoded the name of a previously unknown Maya queen on a stone inscription discovered last year.

A mass grave holding soldiers from Napoleon Bonaparte's French army reveals some of the diseases that killed the Grande Armée during its disastrous retreat from Russia in 1812.

Tropical Storm Melissa is moving at a snail's pace but will intensify rapidly over the weekend as it feeds off near-record-warm water temperatures in the Caribbean Sea, forecasters say.