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.
The problem is that this is an explanation based on zero observations and the assumption that the solar system is 4.5 billion years old. This is not a valid scientific model although it is accepted by most scientists as âthe way it must be.â Comets confirm a young universe, not an imaginary cloud in the sky.