
John W. Young (1930-2018), born on Sept. 24, was NASA's longest-serving astronaut and the only astronaut to fly missions in the Gemini, Apollo and Space Shuttle Programs. via NASA https://ift.tt/UrxWQz
These X-ray computed tomography (XCT) scans of particles from asteroid Bennu show the most common types of crack networks observed in Bennu...
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