Geologic time

Geologic time is the vast scale of Earth's history, spanning about 4.6 billion years. It helps us understand how Earth and its life forms have changed over millions and billions of years. Scientists divide this time into different periods, eras, and eons based on major events like the formation of continents, mass extinctions, and the appearance or disappearance of living organisms. Using techniques like radiometric dating of rocks and fossils, we piece together Earth's story, showing how natural processes have shaped our planet over unimaginable stretches of time.