4.5-billion-year-old traces of ‘proto-Earth’ discovered could rewrite our planet’s origin story |
Scientists at the Massachusetts Institute of Technology (MIT) have uncovered what may be the first physical remnants of “proto-Earth,” the original version of our planet that existed before a massive collision reshaped it into the world we know today. The discovery, published in Nature Geosciences, reveals a rare chemical signature in ancient rocks that appears…

