China's cargo spacecraft Tianzhou-3 separated from the country's space station core module Tianhe and redocked with the module on Wednesday. Tianzhou-3 detached from the rear docking port of Tianhe at 5:02 a.m. (BJT), moved to the module's front port and completed a computer-orchestrated rendezvous and docking at 9:06 a.m., according to the China Manned Space Agency. China plans to complete the in-orbit construction of its space station by the end of 2022.