Earth's core may hold hydrogen equivalent to 45 oceans

Earth's core may hold vast amounts of hydrogen, potentially 9 to 45 times the volume of all Earth's oceans. Scientists simulated early Earth conditions, finding hydrogen can bind within iron alloys, the core's main material. This suggests a significant portion of Earth's water may have originated internally. This discovery could reshape understanding of Earth's early evolution and the origin of its water, impacting theories on how the planet became habitable.