Earth formed about 4.6 billion years ago, during the geological eon known as the Hadean. The name "Hadean" comes from the ...

Ever been late because you misread a clock? Sometimes, the "clocks" geologists use to date events can also be misread.

Earth has experienced both hot and cold periods over time, though warm times have been more common. That’s true of the last 485 million years, as seen in this timeline reported in 2024. Our genus, ...

From 3 billion years ago to roughly 600 million years ago—right at the dawn of complex life on the planet—the Earth’s oceans would’ve been significantly more green than they are today.

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If you had a time machine that allowed you to cruise far into Earth’s incredible history, you’d probably want to avoid a window of time around 3.2 billion years ago.

Earth's crust today has a surprisingly similar composition to the planet's first outer shell, or "protocrust," new research finds. This early rocky shell featured chemical signatures previously ...

But researchers disagree on exactly how old they are. Work from two decades ago suggested the rocks could be 4.3 billion years old, placing them in the earliest period of Earth’s history.

A new study says the collision with a proto-planet called Theia 4.5 billion years ago left remnants deep inside Earth — and also created the moon.

Planet Earth Geology Mesmerizing animation shows Earth's tectonic plates moving from 1.8 billion years ago to today News By Alan Collins published 8 September 2024 ...

Early life on Earth may have gotten an unexpected kickstart thanks to a massive meteor that struck the planet.

Earth was a ball of molten lava when it first formed about 4.5 billion years ago. Scientists originally believed that Earth’s first eon–the Hadean–ended when the first rocks formed.