For years, NASA’s Curiosity rover has been climbing Mount Sharp, the enormous mountain rising from the center of Mars’ Gale ...

Before Homo sapiens underwent its major expansion beyond Africa, our ancestors may have encountered another human population. They may also have interbred with it. We don’t know what these people look ...

Donald Trump has been described as a strongman, a showman and a political wrecking ball, descriptions which both supporters ...

This Wednesday, at around 06:35:37.5 UTC, a spent SpaceX Falcon 9 upper stage is expected to strike sunlit terrain near Einstein Crater. It will be traveling at roughly 8,700 kilometers per hour, or 5 ...

Thousands of satellites and debris fragments could act as a distributed sensor network, revealing how the thermosphere ...

Long-term records documenting the colors of penguin guano shed light on how declining sea ice may be affecting penguin diets.

In one of the ocean’s strangest sleep routines, sperm whales can hang almost motionless in the water like giant living ...

For 25 years, one of the Milky Way’s strangest stellar explosions hid its culprit behind its own debris. Now the dust has ...

A bathroom at Emperor Hadrian’s villa has kept an engineering secret for nearly 2,000 years. Researchers studying concrete ...

Researchers have identified six giant landslides inside three impact craters, where ice and debris fell more than 2 ...

Orcas have long been the ocean’s most inventive predators. Some populations flip sharks upside down to induce paralysis.

Today’s 7,600 languages might seem like a lot, but they're just a fraction that survived a vast, ancient extinction.