HomeAstronomyAsteroid Bennu's mysterious missing craters suggest 'impact armoring' protecting the surface

Asteroid Bennu’s mysterious missing craters suggest ‘impact armoring’ protecting the surface

The surface of asteroid Bennu is riddled with craters. But data from NASA’s OSIRIS-REx mission show that, in fact, many craters are missing. The findings suggest that some unexpected geological processes are underway on the 0.3-mile-wide (0.5 kilometers) space rock recently visited by the American space probe. 

NASA’s OSIRIS-REx spacecraft spent nearly two and a half years between 2018 and 2021 studying near-Earth asteroid Bennu. While the probe won’t deliver its small pieces of that space rock to Earth until next year, scientists have already analyzed thousands of images and troves of data gathered by the spacecraft. 

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