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Asteroid Ryugu's Water Discovery Challenges Earth's Origins Theory

9/14/2025

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Summary

Story summary

Research shows asteroid Ryugu may have held liquid water over a billion years post-formation, challenging earlier theories on Earth's water origins.
Evidence of fluid movement in Ryugu's rocks suggests asteroids carried more water than previously believed.
Led by Tsuyoshi Iizuka from the University of Tokyo, the study indicates water on asteroids lasted longer than expected.
JAXA's Hayabusa2 samples revealed unexpected isotopic ratios, pointing to late fluid flow.
Researchers aim to compare these findings with samples from asteroid Bennu to enhance understanding of Earth's water system.

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Story summary

Research shows asteroid Ryugu may have held liquid water over a billion years post-formation, challenging earlier theories on Earth's water origins.
Evidence of fluid movement in Ryugu's rocks suggests asteroids carried more water than previously believed.
Led by Tsuyoshi Iizuka from the University of Tokyo, the study indicates water on asteroids lasted longer than expected.
JAXA's Hayabusa2 samples revealed unexpected isotopic ratios, pointing to late fluid flow.
Researchers aim to compare these findings with samples from asteroid Bennu to enhance understanding of Earth's water system.