New Research Suggests Earth's Water Formed Internally, Challenging Comet Origin Theory

Research from the University of New Mexico, published in Nature Geoscience, proposes Earth's water largely originated from chemical reactions within its early, hot, hydrogen-rich atmosphere and rocky material. This challenges the long-held theory that comets or asteroids delivered most of Earth's water. The findings suggest water, and potentially life, could be more common on rocky planets across the universe.