"Massive Ocean Discovered Deep Beneath Earth's Surface Surpasses All Surface Seas"

Researchers from Northwestern University have discovered a colossal ocean three times the size of all Earth's surface oceans combined, hidden deep within the Earth's mantle. This finding challenges existing theories about the origins of Earth's water, suggesting that it may have come from within the planet rather than from comet impacts. The discovery could revolutionize our understanding of the Earth's water cycle and fundamental processes, prompting further research to determine if mantle melting is a common occurrence worldwide.