Scientists have discovered an enormous underground ocean located 700km beneath the Earth's surface. Its volume surpasses all surface oceans combined by a factor of three.
Encased within vibrant blue ringwoodite rock in the Earth's mantle, this reservoir challenges existing theories about the origin of Earth's water. The discovery, made by a team from Northwestern University in Evanston, Illinois, involved analyzing seismic waves from 500 earthquakes using a network of 2,000 seismographs across the U.S.
The waves slowed down upon encountering damp rock, signaling the presence of a vast body of water. This finding supports the theory that Earth's water originates deep within its crust, potentially revolutionizing our understanding of the planet's water cycle.