It is -------------------------- if your so smart why don't yopu look it up and not by the enternet :)
The nebular model explains
The nebular hypothesis is the most widely accepted model explaining the formation and evolution of the Solar System.
The Nebular Hypothesis.
It was first proposed in 1734 by Emanuel Swedenborg. Originally applied only to our own Solar System, this method of planetary system formation is now thought to be at work throughout the universe. The widely accepted modern variant of the nebular hypothesis is Solar Nebular Disk Model (SNDM) or simply Solar Nebular Model.
Nebular model
nebular
The creation of stars and planets into solar systems by condensation, concretion, and gravitational collapse.
what is the definition of area model
The nebular hypothesis is the most widely accepted model in the field of cosmogony to explain the formation and evolution of the Solar System (as well as other planetary systems). It suggests that the Solar System formed from nebulous material.
There is evidence that the Nebular hypothesis was first proposed in 1734 by Emanuel Swedenborg.Immanuel Kant, who was familiar with Swedenborg's work, developed the theory further in 1755. A similar model was proposed in 1796 by Pierre-Simon Laplace.
a nebular creates stars as it caves in by its own gravity!
nebular