A vast ring of rocky leftovers between Mars and Jupiter, the asteroid belt preserves clues to how the planets — and Earth ...

Earth formed around 4.54 billion years ago. Knowing how old Earth is can be more difficult to confirm because Earth's age is not only based on the age of rocks, but also the isotopic estimates of what ...

About 4.5 billion years ago, a Mars-sized object smashed into the young Earth, spraying debris that coalesced to form the moon, many scientists think. Some remnants of that object, called Theia, exist ...

The solid inner core at the center of the Earth, surrounded by the outer core, mantle and crust. Here’s why: While it is well known that a material must be at or below its freezing temperature to be ...

The Earth's magnetic field and oxygen evolved together over 540 million years, according to a major NASA study.

Few topics have been as contentious among both scientists and laypeople as the age of the Earth. Many scientists are people of faith, but from the moment the ancients found seashell fossils high in ...

"Hearst Magazines and Yahoo may earn commission or revenue on some items through these links." Deep below the Earth’s crust, along the mantle-core boundary, are dense geological blob-like anomalies ...

Researchers recreated conditions from billions of years ago and found that Earth’s young atmosphere could make key molecules ...

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