Could Earth's Water Have Formed Here Itself? A Fresh Take on Ocean Origins
Scientists are re-evaluating Earth's water origins: comet and asteroid theories are challenged by mismatched deuterium signatures, while experiments on hydrogen reacting with melted rock under high pressure suggest a planet’s own magma ocean could generate vast amounts of water, implying Earth might have formed much of its oceans internally—though the reality may involve a mix of sources and remains unsettled.