In May 2011, NASA selected the Origins, Spectral Interpretation, Resource Identification, and Security–Regolith Explorer (OSIRIS-REx) asteroid sample return mission as the third of its New Frontiers program missions. The previous,… Click to show full abstract
In May 2011, NASA selected the Origins, Spectral Interpretation, Resource Identification, and Security–Regolith Explorer (OSIRIS-REx) asteroid sample return mission as the third of its New Frontiers program missions. The previous, yet ongoing, two New Frontiers missions are New Horizons— which explored Pluto during a flyby in July 2015 and is on its way for a flyby of Kuiper Belt object 2014 MU69 on 1 January 2019—and Juno—an orbiting mission that is studying the origin, evolution, and internal structure of Jupiter. The OSIRIS-REx spacecraft departed for near-Earth asteroid (101955) Bennu aboard a United Launch Alliance Atlas V 411 evolved expendable launch vehicle at 7:05 p.m. eastern daylight time (EDT) on 8 September 2016 for a seven-year journey to return samples from Bennu. Bennu is an Earth-crossing asteroid that has an orbital semi-major axis of 1.1264 AU, which is greater than that of the Earth, but a perihelion distance of 0.89689 AU, less than the Earth’s aphelion distance.
               
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