Hi! I'm Rene Descartes, one of the first proponents of a model on the origin of the Solar System.
I think that the whir- pool like motion in the pre-solar materials lead to the formation of the solar system into bodies with nearly circular orbits.
Buffon's Collision Theory
I'm George Louis Leclerc, Comte de Buffon
and I believe that the planets were formed when a Giant comet clashed with the Sun and the remains developed into planets.
Kant-Laplace Nebular Theory
I'm Immanuel Kant
And I am Perre Simon Laplace
Jeans-Jeffrey's Tidal Theory
I'm Harold Jeffreys
Good day! I am James Hopwood Jeans
Solar Nebular Theory
Finally! it's my turn to discuss.
In this theory, the solar system was formed because of the condensation of interstellar gas which was triggered by perhaps a supernova which could have caused the gas and dust cloud to collapse and form the solar system.
We believe a "Nebula" started to fall due to the gravitational pull and as the cloud contracted, it spun more rapidly and started to flatten into a pancake shaped object with a bulge on the center. As the nebula collapsed further, local regions contracted due to gravity and these regions became the Sun and the planets.
We believe that the planets were created from the torn off material from the sun which was pulled off due to gravitational attraction by a speeding massive star that passed by it. The Material later on condensed into planets.