From Formation to the Modern Day
Earth formed approximately 4.5 billion years ago from the dust and gas surrounding the young Sun. It has transformed over eons from a molten mass to the vibrant, life-supporting planet we know today.
Key Periods in Earth's History
- Precambrian Era: The earliest part of Earth's history, starting with the formation of the planet and lasting until 541 million years ago.
- Paleozoic Era: Known for the Cambrian explosion and the development of fish, amphibians, and reptiles.
- Mesozoic Era: The age of dinosaurs, lasting from 252 to 66 million years ago.
- Cenozoic Era: The current era, starting 66 million years ago and marked by the rise of mammals and humans.
Want to Know More?
Discover more about Earth's past and present by visiting our other pages:
Earth's Environment Life on Earth Our Universe