The planet Earth is about 4.5 billion years old. The oldest fossils on earth are still over 3 billion years old, though. Take a look at the 3.5-billion-year-old fossil and see why it’s the oldest ...

Out in the Kuiper Belt, the massive doughnut of debris beyond Neptune, about one in 10 kilometer-scale objects have surprised scientists with their unexpected shape. Rather than resembling a ball, ...

Sediments from Scotland hint that ocean-atmosphere interactions continued more than 600 million years ago despite widespread ice.

Old crystals found in Western Australia are drawing fresh attention from geologists studying how the planet first took shape. These minerals, known as.

Tiny zircon crystals are revealing that Earth’s earliest history may have included surprisingly complex tectonic activity.

Gas giants possibly developed slowly in the solar system. They developed cores layer by layer within a disk of ice and dust ...

During the Hadean eon, Earth was a world of constant impacts, molten rock, and a toxic atmosphere. The surface was repeatedly ...

Long before oceans stabilized and continents formed, Hadean Earth was a world of molten rock, relentless asteroid impacts, and toxic atmospheres. Surface temperatures were extreme, and the young ...

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 ...

Parts of the ancient Earth may have formed continents and recycled crust through subduction far earlier than previously thought. New research led by scientists at the University of Wisconsin–Mad ...

Parts of ancient Earth may have formed continents and recycled crust through subduction far earlier than previously thought. New research led by scientists at the University of Wisconsin–Madison has ...