MIT Geologists Discover Physical Evidence of Our Proto-Earth of 4.5 Billion Years Ago

Posted by Guy Pirro | 10/23/2025 01:18AM | Comments

Billions of years ago, the early Solar System was a swirling disk of gas and dust that eventually clumped and accumulated to form the Proto-Earth and its neighboring planets. Scientists at MIT and elsewhere have discovered extremely rare remnants of our “Proto-Earth,” which formed about 4.5 billion years ago, before a colossal collision irreversibly altered the primitive planet’s composition and produced the Earth as we know today. Their findings will help scientists piece together the primordial starting ingredients that forged the early Earth and the rest of the Solar System.