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Holy spitting space rocks: Asteroid Bennu is active!

20 Mar 2019, 13:00 UTC
Holy spitting space rocks: Asteroid Bennu is active! NASA/Goddard/University of Arizona/Lockheed Martin

I've said it before, and I’ll say it again: There’s nothing like being there.

This isn’t just an aphorism; when it comes to asteroids it’s the literal truth. NASA’s OSIRIS-REx (Origins, Spectral Interpretation, Resource Identification, Security-Regolith Explorer) spacecraft is making that incredibly clear. Astronomers had some idea of the asteroid Bennu’s size and shape from ground-based observations, but once the spacecraft got there, well, it was basically one surprise after another.

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