Question

How earth was formed according to the nebular hypothesis?

Answer 1

Many hypotheses were recommended by various philosophers and scientists regarding the origin of Earth. One of the early and popular hypotheses was released by the German philosopher named Immanuel Kant. Later on, a mathematician named Laplace revised it in 1796.

Complete answer:
Initially, there was this Nebula cloud made of helium, hydrogen and all sorts of dust particles. This cloud started rotating very heavily and due to that most of the hydrogen and helium elements came to the center and started colliding with each other and due to the friction and collision of particles, fusion reactions took place. Hence, pure energy started generating and this created the Sun, the biggest star of the universe.
It is known that hydrogen and helium are low density elements and they moved to the center to make the sun. So logically if the lighter elements went to the center, the heavier elements went away from the center. The heavier elements like carbon, nitrogen, oxygen, iron, phosphorus went away from the center. Gradually these denser elements started forming small clouds like smaller Nebulas which went through further friction, rotation and collision of particles it further led to the formation of a disc shaped clouds and one by one the planets were formed around the Sun

Note:
In short, first, everything is made from Nebula clouds. Second, stars came into existence way before planets and asteroids and the sun is the biggest star in the universe. The other prominent theories of formation of the earth are the big bang theory, the Accretion theory, the Protoplanet theory and the Capture theory.