Spacecraft's cracked window delayed Chinese astronauts' return; How did it happen and why did the Georgia-based assistant professor blame China for this incident?

The return of three Chinese astronauts was recently delayed after small cracks were found in a window of the Shenzhou-20 spacecraft, with experts suggesting the damage was caused by orbital debris. Georgia Tech assistant professor R. Lincoln Hines criticized China in an article for The Conversation, arguing that the nation is responsible for producing more space debris than any other country. He described the incident as a critical 'wake-up call', warning that China’s accumulation of orbital junk now threatens the safety of astronauts and the future of space activities.


According to futurism.com, China recently postponed the planned November 5 return of three astronauts from its Tiangong space station after suspecting that their Shenzhou-20 return craft - docked since April - had been struck by an object. Those concerns were confirmed when the China Manned Space Agency told Xinhua that inspections revealed 'tiny cracks' in the return capsule’s viewport window, likely caused by an external impact from space debris. Due to the damage, officials determined that the Shenzhou-20 capsule no longer met safety standards for bringing the crew home. Instead, it will remain in orbit to support ongoing experiments while China arranges an alternative return plan for the astronauts.

MILLIMETER-SIZED PIECES IN ORBIT CAN HIT WITH THE FORCE OF A BULLET

The incident underscores the growing danger posed by space debris - ranging from tiny fragments to large defunct satellites - which can travel at tens of thousands of miles per hour. Even millimeter-sized pieces can hit with the force of a bullet, creating serious hazards for long-term human operations in orbit.

Fortunately, the stranded crew has now returned safely to earth. Their replacement ride home came aboard the Shenzhou-21 spacecraft, which arrived at Tiangong on October 31 carrying the next astronaut team. This allowed the outgoing trio to depart and land safely in China’s Inner Mongolia Autonomous Region early Thursday morning.

WHY GEORGIA TECH ASSISTANT PROFESSOR BLAMED CHINA FOR SPACE DEBRIS

As satellite launches rapidly increase, experts fear the space-debris crisis will worsen long before meaningful mitigation efforts gain traction. That raises a key question: why did this incident occur, and what contributed to the danger?

Lincoln Hines, Georgia Institute of Technology assistant professor of international affairs, pointed to China’s own history with orbital debris while commenting on the cracked-window incident. In his analysis for The Conversation, he noted that China has long been a major contributor to the space-junk problem and highlighted one event in particular that continues to threaten spacecraft today.

"It’s somewhat ironic that China’s spacecraft took a hit from space junk," Hines wrote in a piece for The Conversation as quoted by futurism.com.

"The country is responsible for creating the majority of space debris," he added. "In 2007, China blew up a defunct Fengyun-1c weather satellite to test an anti-satellite weapon," he wrote. "It generated the most space debris in history - over 3,000 pieces are still orbiting today."