A bullet-speed experiment reveals that the Earth's inner core may be softer and more dynamic than previously thought.

Our species likes it cold. Homo sapiens evolved in — and still inhabits — one of Earth’s rare and fragile ice ages, periods distinguished not by an abundance of saber-toothed cats and woolly mammoths ...

Geological evidence, including an Ordovician-era increase in earthquakes, tsunamis, meteorites, and crater formation, suggests a significant celestial event approximately 466 million years ago. A ...

The object, the latest “quasi-moon” detected by astronomers, could be with us for almost another 60 years. By Robin George Andrews The Earth stands alone in the solar system as a habitable world, as ...

Scientists have long wondered why Earth's overall makeup doesn't fully match the mix of materials found in ancient meteorites. One hypothesis has been that our proto-Earth (what the earliest stages of ...

Earth’s path around the Sun is not a fixed racetrack but a slowly shifting orbit, and those subtle changes have a long history of reshaping the planet’s climate. As astronomers refine how these ...

Earth’s distant future has always been framed as a slow fade billions of years from now, but a new generation of models is painting a sharper and more unsettling picture. Instead of a gentle decline, ...

The Orbiting Carbon Observatory (OCO) 2 spacecraft is one of many science missions at NASA targeted for termination in the 2026 budget request. Credit: NASA/JPL-Caltech WASHINGTON — Comments by NASA’s ...

Astronomers recently detected a stray quasi-moon in our planet’s orbit, but it's hardly the first stowaway to hang out around Earth. Unlike the Earth's moon, quasi-moons are not gravitationally bound ...