If Earth was built close to the young Sun, where did its water come from? New isotope analysis rewrites part of Earth’s origin story and gives scientists a new mystery to solve

New analysis suggests Earth formed solely from inner Solar System material. This challenges previous theories about outer Solar System contributions to our planet. Researchers examined isotopic signatures across ten different isotope systems. Jupiter's gravity may have separated inner and outer Solar System reservoirs. The origin of Earth's water now presents a more complex scientific puzzle.