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Evgenii Krestianinov, PhD candidate, Research School of Earth Sciences, Australian National University

Sahara space rock 4.5 billion years old upends assumptions about the early Solar System

Solar System the Solar System Earth uranium Algeria the Sahara Desert
Steve Jurvetson / Wikimedia, CC BY-SA

In May 2020, some unusual rocks containing distinctive greenish crystals were found in the Erg Chech sand sea, a dune-filled region of the Sahara Desert in southern Algeria.

On close inspection, the rocks turned out to be from outer space: lumps of rubble billions of years old, left over from the dawn of the Solar System.

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