A new study suggests that Earth's water may have originated in the planet's own fiery atmosphere rather than arriving via icy comets or asteroids, challenging a long-standing theory about the origins of the planet's oceans. Researchers found that rocky pebbles reacting with hydrogen under extreme heat can produce water within minutes, a process that may have generated hundreds of oceans' worth of water during Earth's formation. The findings, reported in the science category, indicate that water could be a natural byproduct of how rocky planets form rather than a substance that must be delivered from space.
The research offers a potential explanation for how Earth acquired its vast water reserves despite forming in a hot, volatile environment. If confirmed, the mechanism would reshape scientific understanding of planetary formation and the conditions under which habitable worlds emerge. Scientists caution that further study is needed to determine the process's full contribution to Earth's water budget, but the results suggest that other rocky planets may similarly generate water as an inherent part of their development, with significant implications for the search for life beyond Earth.
Independent reporting synthesized from primary wires and global correspondents.