Before revision: NASA's Wide-field Infrared Survey Explorer mission, originally operated by the agency's astrophysics division for an infrared all-sky survey, was placed into hibernation in 2011 and then reawakened in 2013 in order to conduct an asteroid survey by the planetary science divisio division.
After revision: NASA's Wide-field Infrared Survey Explorer mission, originally operated by the agency's astrophysics n for an infrared all-sky survey, was placed into hibernation in 2011 and then reawakened in 2013 in order to conduct an asteroid survey by the planetary science divisio division.