“The Planetesimal Theory of the Formation of the Solar System”

The Planetesimal Theory suggested that the solar system originated from a rotating disk of dust and gas, with small planetesimals gradually colliding and sticking together to form larger bodies such as planets. However, this theory faced challenges in explaining certain aspects, such as the formation of gas giants and the presence of elements with high boiling points in the inner rocky planets. Additionally, advancements in observational data and computer simulations have provided stronger support for the competing theory of nebular hypothesis, which proposes that the solar system formed from the collapse of a massive molecular cloud.