How Did the Solar System Evolve?
A recent study, in 2007, modelized a possible evolution of the solar system, with the protoplanetery gas and dust cloud having lasted for about 10 million years while the gas giants, like Neptune and Uranus were close together and close to the Sun and Jupiter and Saturn amazingly featuring a sole mass. Then, at 10 million years after the birth of the solar system, the gas and dust cloud dissipated as the Kuiper Belt forms, being less large than today as it contained 100 times comets more than now! Between 10 and 700 million years, the KB comets come and hit the gas giants, which those, Jupiter excepted, migrating outwards -albeit Neptune keeping coming before Uranus. Then, at 700 million years, it’s the telluric planets which are in turn bombarded due to that the gas giants have orbits with larger eccentricites than today and sending the comets into the inner solar system. From 730 to 800 million years after the solar system was born, it eventually reaches its current shape, with Neptu
