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How did life begin?

A possible sequence of events in the formation of the Earth: 1. The formation of planetesimals 2. The planetesimals become the...Read More >>A possible sequence of events in the formation of the Earth: 1. The formation of planetesimals 2. The planetesimals become the four rocky inner planets, Mercury, Venus, Earth and Mars. 3. Bombardment by meteorites causes the Earth’s rocky surface to melt. 4. Thousands of volcanic eruptions occur all over the globe. 5. The gases from these eruptions collect to form the atmosphere. 6. Rain pours from the sky for millions of years, forming the oceans.Along with all the other planets of the Solar System, the Earth was formed about 4.6 billion years ago. In its early years, it had no water or life. It was just a ball of barren rock. Meteorites (large boulders), rained down from space, punching large craters out of the ground. Life probably arose in the Earth's oceans about 3800 million years ago.



The young Earth's changing landscape: 1. Bombardment by meteorites. 2. The Earth's rocky surface melts. 3. Gases burst into the...Read More >>The young Earth's changing landscape: 1. Bombardment by meteorites. 2. The Earth's rocky surface melts. 3. Gases burst into the sky through erupting volcanoes. 4. Ocean basins fill with water as a result of constant rains.

Formation of the Earth

The longest storm the Earth has ever known took place in the early years of its formation. Water poured from the sky for many millions of years until the basins in the land filled up, becoming the great oceans.

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