Mysterious volcanoes of Asteroid Bennu show ‘impact armoring’ shielding the surface

The surface of the Bennu asteroid is filled with volcanoes. But data from NASA’s OSIRIS-REx mission shows, in fact, the two holes are missing. The findings suggest that some unexpected geological processes are beginning in the 0.3-mile-wide (0.5-kilometer) rock visited by American explorers.

NASA OSIRIS-REx Spacecraft spent about two and a half years between 2018 and 2021 studying near Earth. asteroid Bennu. Although the probe will not give its small pieces of that rock to Earth until next year, scientists have already searched for thousands of images and data collected by the plane.

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