Explore 25 Major Events in Earth's 4.5 Billion Year History. Discover pivotal moments from its formation to the rise of life.

If the Entire History of Earth Were Just One ...

Welcome to the early solar system. Just after the planets formed more than 4.5 billion years ago, our cosmic neighborhood was a chaotic place. Waves of comets, asteroids and even proto-planets ...

Continental clues: Modern continental rocks carry chemical signatures from the very start of our planet’s history, challenging current theories about plate tectonics. Researchers have made a new ...

Life thrived on Earth far earlier than previously believed, flourishing under the harsh reign of the Hadean eon. LUCA—the last universal common ancestor—was even designed to fend off ancient viruses.