
The perfectly picturesque spiral galaxy known as Messier 81, or M81, looks sharp in this composite from NASA's Spitzer and Hubble Space Telescopes and NASA's Galaxy Evolution Explorer. via NASA https://ift.tt/RZsBXdH
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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