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

A new study analyzes three asteroid and two meteorite samples to see if space rocks smacking into Earth could’ve helped ...

Scientists have long known that Earth's core is mostly made of iron, but the density is not high enough for it to be pure ...

Uncertainty in climate models could mean Earth systems are perilously close to their tipping points, scientists warn.

Key climate tipping points may be closer than expected, raising the risk of accelerating warming, sea-level rise, and ...

Earth’s climate system may be approaching a set of irreversible thresholds that, once crossed, could lock the planet into a dramatically warmer state for centuries. A major multi-author synthesis ...

Even when Earth was locked in its most extreme deep freeze, the planet’s climate may not have been as silent and still as once believed. New research from ancient Scottish rocks reveals that during ...

Could we prevent in-orbit crashes in the future by using advanced computer models?

A newly identified planet candidate, HD 137010 b, looks strikingly Earth-like in size and orbit — but it may be colder than Mars due to its dimmer star. If it has a thick enough atmosphere, though, ...