
ancient Earth
Ancient Earth, formed about 4.5 billion years ago, was initially a hot, hostile environment with frequent asteroid impacts and volcanic activity. Over millions of years, it cooled, forming a solid crust and oceans. Early life emerged around 3.5 billion years ago, starting with simple microorganisms. The planet's surface constantly changed due to tectonic activity, ice ages, and climate shifts, shaping the world we see today. Understanding Earth's ancient past helps us appreciate the dynamic processes that created the diverse environment and life we enjoy now.