Tianzhou-3 cargo spacecraft docks with China space station module
About
Tianzhou 3 is a mission of the Tianzhou-class uncrewed cargo spacecraft.
Like previous Tianzhou missions, the spacecraft was launched from Wenchang Satellite Launch Center in Hainan, China on a Long March 7 launch vehicle.
Tianzhou 3 is the second cargo resupply mission to the Tianhe core module (TCM) of the under-construction Tiangong space station, carrying over six tons of supplies.
Tiangong is a space station being constructed by China in low Earth orbit between 340 and 450 km above the surface.
Being China's first long-term space station, it is the goal of the "Third Step" of the China Manned Space Program.