AI Insight
Research suggests that Earth's first continents may have formed as a result of the planet's changing shape during its early history. As the young Earth's rotation slowed down due to the Moon's gravitational influence, the planet transitioned from a bulging, oblate shape to a more spherical form. This geometric reshaping created stresses in the crust that may have triggered the formation of the first continental landmasses.
Why it matters
This finding offers a new explanation for how Earth's continents originated, a fundamental question in planetary science. Understanding continental formation helps explain how Earth became habitable and could inform our search for Earth-like planets elsewhere in the universe.
Understand the Science
As our young planet spun down, its bulging shape gave way to a sphere, driving the formation of continental crust
Source: The Moon may have squeezed Earth’s first continents into existence