How earth was formed?

The current scientific explanation for the formation of Earth is known as the "Solar Nebula" theory. According to this theory, the Solar System formed about 4.6 billion years ago from a cloud of gas and dust known as the solar nebula.

The solar nebula began to collapse under its own gravity, forming a spinning disk of material. As the disk continued to collapse, it began to heat up due to friction and compression. Eventually, the center of the disk became so hot that it ignited nuclear fusion, forming the Sun.

Meanwhile, the rest of the disk began to cool and solidify. Small particles began to stick together, forming larger and larger clumps, known as planetesimals. These planetesimals then collided to form even larger bodies, known as protoplanets.

Over time, the protoplanets in the inner Solar System, including Earth, collided and merged to form larger and larger bodies. Eventually, the protoplanet that would become Earth formed through the collision and merger of several larger bodies.

As the Earth continued to form, it was bombarded by leftover planetesimals and comets. This bombardment caused the Earth to heat up, causing molten rock to rise to the surface and solidify to form a crust. This process is known as accretion.

The heat from the impacts also caused the Earth's surface to begin to differentiate, with denser materials sinking to the center to form the core, and less dense materials rising to the surface to form the crust and atmosphere.

It's worth noting that this is a simplified explanation of a complex process and there are still debates and research ongoing in the scientific community about the details of how the Earth formed.