The Formation of the Solar System: Theories Old and New For centuries, humanity has looked at the stars and wondered: how did this all begin? Our current understanding of the solar system’s birth 4.6 billion years ago is a blend of centuries-old logic and cutting-edge space observations. The Foundation: The Nebular Hypothesis
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...
Before the Nebular Hypothesis became the standard, other "catastrophic" theories were popular: History of Solar System formation and evolution hypotheses The Formation of the Solar System: Theories Old