A dramatic turn of events has left three Chinese astronauts, also known as taikonauts, temporarily stranded in space after a serious issue with their Shenzhou-20 spacecraft. The crew’s return capsule, which was supposed to bring them safely back to Earth, was hit by what experts suspect to be a piece of “space junk.” The impact happened just hours before their scheduled return, throwing China’s Shenzhou-20 mission into uncertainty and raising new concerns about the growing problem of orbital debris.
A Sudden Twist in the Shenzhou-20 Mission
The three crew members — Wang Jie, Chen Zhongrui, and Chen Dong — form the Shenzhou-20 team. They have been living and working aboard China’s Tiangong Space Station since April 24, 2025. Their mission was considered a major success, filled with months of experiments, maintenance work, and international recognition for their achievements.
The team was supposed to return to Earth on Wednesday, November 5, after a smooth handover with the newly arrived Shenzhou-21 crew, who reached Tiangong on October 31. But earlier that day, at around 10:30 a.m. local time, the China Manned Space Agency (CMSA) announced an unexpected delay. In a post on Weibo, China’s social media platform, CMSA confirmed that the Shenzhou-20 return capsule had been “suspected of being impacted by small space debris.”
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Engineers and mission controllers are now conducting a risk assessment and impact analysis to determine how much damage the Shenzhou-20 spacecraft sustained. So far, CMSA has not released details about the severity of the hit or when the astronauts will be able to return. For now, all six astronauts — those from Shenzhou-20 and Shenzhou-21 — are safe aboard Tiangong as the investigation continues.
Shenzhou-20 Return Capsule Faces Uncertain Future
The Shenzhou-20 spacecraft, which carried the crew to the Tiangong station, is currently docked to the orbiting outpost. It consists of three main sections — a propulsion module, a crew living compartment, and a return capsule designed to parachute the astronauts back to Earth. Even a tiny crack or dent in any of these parts can threaten the crew’s safety during reentry.
According to reports from Ars Technica, if any part of the Shenzhou-20 return capsule is found unsafe, it may be sent back to Earth without the astronauts on board. In that scenario, the Shenzhou-20 crew would use the Shenzhou-21 spacecraft for their eventual return trip. China’s space program reportedly keeps a backup spacecraft on Earth at all times, ready to launch in case of such emergencies.
Despite the setback, CMSA has reassured that all astronauts are safe and in good health. The Tiangong station is functioning normally, and the crew has enough oxygen, food, and resources to remain in orbit for as long as needed.
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This event has also resulted in a historic achievement for Commander Chen Dong, leader of the Shenzhou-20 mission. Chen, a veteran astronaut, has now broken the record for the most cumulative days spent in space by a Chinese astronaut, surpassing 400 days in orbit. His record continues to grow as the Shenzhou-20 delay extends his stay.
The situation mirrors past incidents in space exploration. In September 2023, NASA astronaut Frank Rubio accidentally broke the American record for the longest spaceflight — 371 days — after his spacecraft was damaged by a meteoroid while docked at the International Space Station (ISS). Likewise, in 2024, NASA astronauts Butch Wilmore and Suni Williams stayed nine months in orbit instead of a week due to issues with their Boeing Starliner capsule.
Space Junk: The Growing Threat in Orbit
This is not the first time that China’s Tiangong Space Station has faced trouble from space debris. In 2023, one of its solar panels was hit by a small fragment of orbital junk, leading to a temporary power failure. Since then, Chinese engineers have added extra shielding during spacewalks to better protect the station and the Shenzhou-20 docked modules.
The International Space Station faces similar problems, frequently having to adjust its orbit to avoid large debris. Smaller fragments have already caused visible damage to parts of the ISS, including its Canadarm2 robotic arm, which bears dents from past impacts.
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Space debris, commonly called space junk, consists of broken satellites, used rocket parts, and fragments from old collisions. These objects orbit Earth at incredible speeds — sometimes faster than 28,000 kilometers per hour — which means even a small screw-sized object can cause catastrophic damage to spacecraft like Shenzhou-20.
Experts warn that as more satellites and rockets are launched every year, the risk of collisions increases. Scientists fear a chain reaction called the Kessler Syndrome, where one crash creates more debris that triggers more crashes, making low Earth orbit unsafe for future missions.
For now, the focus remains on the Shenzhou-20 astronauts who are stranded but safe aboard Tiangong. Engineers are working tirelessly to assess the damage and determine the safest way for the crew to return home. This tense moment is a reminder that space travel, while inspiring, still carries serious risks — especially in an increasingly crowded orbit filled with dangerous debris.
