The preposition is followed by its object (and words that modify the object in the prepositional phrase). A preposition is a word that occurs before a noun/pronoun in a clause. Preposition means, pre-before and position-the object's location.
The most widely accepted scientific explanation for the formation of the Solar System is called the Solar Nebular Model. According to this model, the entire Solar System formed around 4.5 billion years ago from the gravitational collapse of a small fraction of a giant molecular cloud, also known as a nebula.
Most scientists believe that our solar system evolved from the accretion of solid particles derived from a large nebular cloud-the so-called Nebular Hypothesis. Under this scenario, proto-planet Earth would have grown over time from a barrage of extraterrestrial impacts, increasing its mass with each bombardment.