It resembles the Death Star and hides a secret that could reshape how we see icy moons. Saturn’s smallest round moon, Mimas, long thought geologically dead, may conceal a liquid ocean beneath its frozen surface.

In December 1891, a Canadian physical education instructor named James Naismith created a new indoor sport to keep his students active during the harsh New England winter.

In the icy waters between Greenland and Canada lies Hans Island, a barren 1.3 km² rock with no population, no resources, and, for nearly five decades, two national flags.

In an era when physical activity was still tied to labor, one Swedish doctor began reimagining exercise not as toil, but as science.

In January 2020, as news of a novel coronavirus spread from Wuhan, users on the imageboard site 4chan created an anthropomorphized version of the virus named “Corona-chan.”

In 1932, Australia faced an agricultural crisis unlike any before. On the wheat farms of Western Australia, more than 20,000 emus began invading newly cleared farmland, damaging crops and breaking fences.

In December 2015, Beijing issued a red alert, shuttering schools and restricting cars as pollution soared to ten times the WHO’s recommended limit. But this wasn’t new.

On June 4, 1913, a woman stepped onto the track during the Epsom Derby, one of Britain’s most prestigious horse races. As King George V’s horse, Anmer, galloped toward the finish line, she moved into its path.

At exactly 03:14:08 UTC on 19 January 2038, some computers will attempt to take one small step forward in time—and leap 136 years backward instead.

In the final years of World War II, a group of British prisoners of war inside Colditz Castle—Germany’s supposedly escape-proof Oflag IV-C camp—began secretly building a glider.