November 25, 2025
At 12:11 p.m. on 25 November 2025, a Long March 2F climbed away from Jiuquan with every seat empty and three lives depending on it. No Shenzhou had flown without a crew since Shenzhou 8 in 2011, and none had ever flown as an emergency. High overhead, the Shenzhou 21 astronauts had spent eleven days aboard Tiangong without a flightworthy way home, their station suddenly the object of the first emergency launch in the history of China's human spaceflight program.
The crisis had begun on 5 November, when the Shenzhou 20 crew, hours from undocking for home, found a small triangular crack in their capsule's window. Closer inspection revealed fine fractures, the suspected signature of an orbital debris strike, and managers ruled the ship unsafe for reentry. The stranded crew borrowed the newly arrived Shenzhou 21 capsule and landed safely on 14 November, which solved one problem by creating another: the astronauts still aboard now had no lifeboat. China activated its standing rescue protocol, a backup rocket and spacecraft kept ready at Jiuquan for exactly this scenario.
Twenty days after the crack was found, Shenzhou 22 was flying. In place of a crew it carried fresh food, medical supplies, station spare parts, and equipment to evaluate whether the damaged window could be repaired in orbit. Three and a half hours after liftoff it docked itself to Tianhe's forward port at 3:50 p.m. Beijing time, and Tiangong once again had a certified ride home. The episode echoed Roscosmos's uncrewed Soyuz MS-23 rescue at the International Space Station in 2023, and the China Manned Space Agency declared the whole twenty-day chain of decisions a complete success.
The empty capsule then waited patiently for half a year. On 29 May 2026 it carried Zhang Lu, Wu Fei, and Zhang Hongzhang back to the Dongfeng landing site, closing out a record 210-day expedition that had outlasted one damaged spacecraft and validated an entire emergency architecture. Orbital debris had forced a station program to improvise a new way home, and the improvisation worked.
Launch
25 Nov 2025, 04:11 UTC (12:11 Beijing)
Rocket
Long March 2F (Y22)
Crew aboard
0 — first uncrewed Shenzhou since 2011
Docking
25 Nov 2025, 07:50 UTC, Tianhe forward port
Turnaround
20 days from crack discovery to liftoff
Cargo
Food, medical supplies, spares, window-repair gear
It was the first emergency launch in the history of China's human spaceflight program, and the first uncrewed Shenzhou since Shenzhou 8 in 2011.
The triangular window crack on Shenzhou 20 was discovered just hours before its crew was scheduled to undock for home.
Only 20 days elapsed between finding the crack and launching the replacement spacecraft.
The Shenzhou 21 crew spent 11 days aboard Tiangong with no flightworthy return vehicle, the gap this launch closed.
Instead of astronauts, the cabin carried fresh produce, medical supplies, spare parts, and tools to assess repairing the cracked window in orbit.
Shenzhou 22 created a template every station program will study: detect debris damage, retask a docked vehicle, and field a replacement spacecraft within three weeks. It was the most consequential demonstration of the standing-rescue-vehicle doctrine since Soyuz MS-23, converting a potential crew-safety crisis into proof of institutional readiness. The mission also sharpened global attention on the worsening orbital debris environment, which had just grounded a crewed spacecraft for the first time.