What is Earth?
Earth is one of the most fascinating structures to ever exist—by being the 3rd closest planet in our solar system while located in the Goldilocks zone, the blue planet is known for harbouring life. This diverse cosmic structure has a hydrosphere, a biosphere, an atmosphere, tectonic activity, and much more.
How did Earth create itself?
Around 4.6 billion years ago, after the formation of the protostar, planetesimals orbiting around it started to stick to one another. And as these protoplanets grew and grew, they formed what we call protoplanets. Earth was one of the protoplanets.
However, as the protoplanets grew more extensive, causing one of them to collide with Earth. After the crash, the debris from this impact eventually coalesced to form our only natural satellite—the Moon.
As the changes of Earth continued, its inner centre began to hotten, assembling the denser materials to sink inwards. Because of the procedure, it formed the Earth's core. This process is known as planetary differentiation.
Even after all that, Earth went through more geological changes (for example: the evolution of the atmosphere, ice ages and climate changes, asteroid or comet collisions, etc)