US EditionThis Asteroid Held Liquid Water Much More Recently Than We Thought
Asteroid Ryugu's parent body retained liquid water for about a billion years after formation, containing 20-30% water, impacting theories on Earth's water origin, researchers say.
5 Articles
5 Articles
Asteroid Ryugu once had liquid water flowing through it
Samples retrieved from asteroid Ryugu indicate that it once had flowing water in far greater volumes than previously thought possible, suggesting that similar objects may have played a role in delivering vast quantities of water to Earth
Asteroid tells secrets of Earth's 'far wetter' building blocks
Tokyo (AFP) Sept 10, 2025 Earth's building blocks were "far wetter" than previously imagined, new analysis of tiny samples from a distant asteroid has suggested, overturning long-held assumptions about the early solar system. Research on a tiny portion of the 5.4 grams of rock and dust collected from the Ryugu asteroid, some 300 million kilometres (185 million miles) from Earth, offers new insights into how the solar
Rock crumbs from space call into question common conjectures as to how much water asteroids once brought to EarthOn the mother body of the asteroid Ryugu flowed water even more than a billion years after its formation. This includes a research team from the analysis of rock fragments of Ryugu that were brought to Earth as part of the "Hayabusa 2" project. So far it has been assumed that water activity on asteroids existed only in the earliest mo…
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