The Shenzhou-21 manned spacecraft completed a record-time docking with the Tianhe core module of the Tiangong station after its launch, consolidating the accelerated pace of the Chinese manned program.
In a rapid rendezvous maneuver, the vehicle departed from the Jiuquan Launch Center at 23:44 (local time) and in just three and a half hours attached itself to the orbital complex, propelled by a Long March-2F Y21 rocket.
Chronology of the orbital encounter
The docking with the Tianhe module was completed at 03:22 local time (19:22 GMT) , about three and a half hours after launch, cutting the usual times for this maneuver in previous Shenzhou missions by almost half.
- Takeoff: 23:44 (local time) from Jiuquan, in the Gobi Desert.
- Coupling: 03:22 (local time), after 3,5 hours of quick encounter profile.
- Access to the complex: 04:58 (local time), joining with the Shenzhou-20 crew at the program's seventh in-orbit rendezvous.
Crew and relief at Tiangong
Commander Zhang Lu leads Wu Fei (32 years old) , the youngest Chinese astronaut to date, and Zhang Hongzhang, a payload specialist. The three entered the orbital laboratory shortly after docking.
For approximately five days they will live with the outgoing Shenzhou-20 crew , sharing operations and transferring responsibilities before the previous team returns to Earth.
Objectives and activities of the expedition
The stay will last approximately six months and includes 27 scientific and applied projects , among them the validation of a new suit for extravehicular activities and hardware testing for prolonged use in microgravity.
The program includes biological experiments with mice sent to the station, as well as demonstrations of life on board that seek to bring the space experience closer to the public, such as a barbecue in microgravity aimed at outreach.
The deployment of protective shields against space debris and the installation of external payloads are also planned , along with educational activities broadcast from the station itself.
Tiangong today and upcoming milestones
Designed with a minimum lifespan of a decade , Tiangong aspires to be the planet's operational orbital outpost when the International Space Station completes its planned decommissioning by the end of this decade.
Meanwhile, China maintains its goal of a manned lunar landing before 2030 , following milestones such as the Chang'e 4 probe on the far side of the moon and the Tianwen-1 Mars mission, and is working on partnerships for a future scientific base at the south pole of the Moon.
A European Perspective
For Spain and the rest of Europe, the progress of Shenzhou-21 underlines the accelerated pace of the Chinese space program and its impact on the global space value chain, from Earth observation to developments in materials and medicine in microgravity.
Beyond the geopolitical aspect, Tiangong's progress reinforces the interest of the European research community in new opportunities for science in orbit and in debris mitigation technologies that benefit the safety of all agencies and operators.
With a docking completed in 3,5 hours, a mixed crew of veterans and rookies, and an ambitious work agenda, Shenzhou-21 and Tiangong face a key semester for microgravity science and for the space calendar of the next decade.
