17 Dec, 2018
Blog 71: Bennu
The OSIRIS-REx spacecraft arrived at the asteroid called Bennu on Dec. 3, and already has made scientific discoveries: Bennu has few craters, boulders litter the surface like chocolate in a chocolate chip cookie, and the asteroid shows signs of the presence of water at some time in the past.
NASA’s ludicrously-named spacecraft -- the acronym stands for Origins, Spectral Interpretation, Resource Identification, Security-Regolith Explorer -- cruised past the asteroid, having traveling 1.2 billion