As much as 45 oceans’ worth of hydrogen may be in Earth’s core, scientists reported, suggesting most of Earth’s water was ...

Earth’s core may contain up to 45 oceans’ worth of hydrogen, a new study finds—an estimate that suggests that the planet formed from a gas-and-dust disk that was rich in the universe’s lightest ...

A UT San Antonio-led international research team has identified chitin, the primary organic component of modern crab shells and insect exoskeletons, in trilobite fossils more than 500 million years ...

Scientists at the University of Southampton have uncovered evidence from ancient rocks that Earth's climate continued to ...

A long-standing idea in planetary science is that water-rich meteorites arriving late in Earth's history could have delivered a major share of Earth's water. A new study by Universities Space Research ...

Scientists are trying to understand why the amount of CO2 in the atmosphere changed by about 90 parts per million (ppmv) between icy (glacial) and warmer (interglacial) periods in Earth’s history.

The dazzling lights of the aurora are created when high-energy particles from space collide with Earth's atmosphere. While ...

Francis Nimmo, professor of earth and planetary sciences, has been named a fellow of the Royal Society, the UK’s national academy of sciences. The society announced today the election of 90 ...

Shannon Curry remembers the first time she saw the moon up close. She was an undergraduate at Tufts University doing research in Oracle, Arizona, and got the chance to see the moon through a ...

I’m a planetary scientist who was born the year of Sputnik’s launch. Over the course of my 40-year career, I’ve witnessed not one but at least five separate revolutions that fundamentally transformed ...