The Formation Of The Solar System: Theories Old... File

Before the Nebular Hypothesis became the standard, other "catastrophic" theories were popular: History of Solar System formation and evolution hypotheses

As the nebula collapsed, it spun faster and flattened into a disk, with the Sun forming at the hot, dense center. The Formation of the Solar System: Theories Old...

The most widely accepted model, the , was first proposed in the 18th century by Emanuel Swedenborg, Immanuel Kant, and Pierre-Simon Laplace. It suggests our solar system formed from a massive, rotating cloud of interstellar gas and dust—the solar nebula—that collapsed under its own gravity. Before the Nebular Hypothesis became the standard, other

In the cooler outer regions of this disk, dust grains collided and stuck together, eventually growing into planetesimals and then full planets. Old Theories: Catastrophic Encounters dust grains collided and stuck together