Asteroid Bennu sports landslide
The impact of a tiny body on the asteroid Bennu caused a rock slide that revealed the surface properties of rock-pile asteroids.
Using images collected by NASA's OSIRIS-REx spacecraft, researchers have traced the progress of a landslide on the asteroid Bennu
The team determined that the way this "deep-space landslide" progressed would be possible only if Bennu had certain properties at its surface
namely, dry dust particles with little or no cohesion.
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. The discovery gives scientists better insight into how rubble-pile asteroids — those composed of a loose collection of smaller rocks and dust and held together by gravity
"The landslide started when debris from a meteoroid impact fell back onto Bennu's surface