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

Scientists have long debated whether most of Earth's vital liquid was delivered via icy comets or was homemade ...

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 ...

Geoscientists say Earth will be home to one massive supercontinent about 200 million years from now; there are four prominent versions of this mega-continent. The climate might be surprisingly balmy ...

Scientists say warming is increasing faster than at any time in at least 3 million years. There is no guide for what comes ...

Simulations suggest that two enormous masses of hot rock have been involved in generating Earth’s magnetic field and giving ...

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, ...