China launches Wentian, second of three space station modules

China recently launched the second of three modules needed to complete its new space station.

About Wentian lab module:

• It is the largest and heaviest the country ever sent off to its space station complex that's under construction.
• Weighing 23 tonnes, the Wentian lab module is 17.9 meters long with a diameter of 4.2 meters.
• It consists of three parts:
• a work cabin,
• an airlock cabin and
• a resource cabin
• Compared with the Tianhe core module, which is already operating, Wentian is larger and heavier, out competing the core module in power supply and information transmission.
• Wentian was propelled by a Long March 5B rocket from the Wenchang launch centre on China's tropical island of Hainan.
• Beijing launched the central module of its space station Tiangong -- which means "heavenly palace" -- in April 2021.
• Almost 60 feet long and weighing 22 tonnes, the new module has three sleeping areas and space for scientific experiments.
• It will dock with the existing module in space, a challenging operation that experts said will require several high-precision manipulations and the use of a robotic arm.
• Wentian will also serve as a backup platform to control the space station in the event of a failure.
• The final module to complete the space station is scheduled to dock in October, and Tiangong is expected to become fully operational by the end of the year.
• The station will then assume its final T-shape, and be similar in size to the former Russian-Soviet Mir station.
• Its lifespan should be at least 10 years.
• The world's second-largest economy has poured billions into its military-run space programme, with hopes of having a permanently crewed space station and eventually sending humans to the Moon.