Do You Know The Formation of Earth

The Earth formed about 4.5 billion years ago through a process called accretion from the solar nebula — a giant cloud of gas and dust left over from the birth of the Sun. Here’s a step-by-step explanation of how Earth was made:

1. Formation of the Solar System (4.6 billion years ago)

• After the Sun formed from collapsing gas and dust, leftover material began orbiting it.

• Gravity caused this material (dust, ice, and gas) to clump together into small rocks called planetesimals.

2. Growth of Protoplanets

• Over millions of years, these planetesimals collided and stuck together due to gravity.

• One large body started growing bigger in the region where Earth is now — this is called a protoplanet.

3. Differentiation of Layers

• As Earth grew, it became so hot (due to collisions, gravity, and radioactive decay) that it melted.

• Heavier materials like iron and nickel sank to the center to form the core, while lighter materials formed the mantle and crust.

4. Formation of the Moon

• Scientists believe a Mars-sized body called Theia collided with early Earth.

• The debris from this impact formed a disk around Earth, which eventually clumped together to create the Moon.

5. Cooling and Atmosphere Creation

• Volcanic eruptions released gases like water vapor, carbon dioxide, and nitrogen, forming the first atmosphere.

• Water vapor condensed and led to the formation of oceans.

6. Development of Life

• Once conditions stabilized (oceans, atmosphere, and surface cooled), the first simple life forms appeared around 3.5–4 billion years ago.