Wentian module

Wentian
问天
Rendering of Wentian lab module
Module statistics
COSPAR ID2022-085A
Part ofTiangong space station
Launch date24 July 2022, 06:22:32 UTC
Launch vehicleLong March 5B (Y3)
Mass
  • Dry: 21,650 kg (47,730 lb)
  • At launch: ~23,200 kg (51,100 lb)
  • In orbit: ~22,000 kg (49,000 lb)
Length17.9 m (59 ft)
Diameter4.2 m (14 ft)
Pressurised volume118 m3 (4,200 cu ft)
Habitable: 39 m3 (1,400 cu ft)
Docking with Tiangong space station
Docking portTianhe forward
Docking date24 July 2022, 19:13 UTC
Undocking date30 September 2022, ~03:44 UTC
Time docked67 days, 8 hours, 31 minutes
Berthing at Tiangong space station (relocation)
Berthing portTianhe starboard
Berthing date30 September 2022, 04:44 UTC
Time berthed3 years, 5 months, 18 days

The Wentian laboratory cabin module (simplified Chinese: 问天实验舱; traditional Chinese: 問天實驗艙; pinyin: Wèn tiān shíyàn cāng; lit. 'Quest for the Heavens laboratory cabin module'), is a major component of the Tiangong space station. It is the first of the station’s Laboratory Cabin Modules and the first module added to the Tianhe core module.

Wentian was launched on 24 July 2022 from the Wenchang Spacecraft Launch Site and docked with Tianhe later that day. The crew of Shenzhou 14 entered the module for the first time a few hours later. On 30 September 2022, the module was relocated to the starboard port by the station’s indexing robot arm to prepare for the arrival of the Mengtian.