China hatched a butterfly in space as part of a scientific experiment designed to test how complex life-support systems function in orbit, Chinese researchers said. The successful transformation of a butterfly chrysalis into an adult insect in microgravity marked a rare biological milestone and offered new insight into sustaining life beyond Earth.
The experiment placed a butterfly chrysalis inside a sealed, compact ecosystem that operated in low-Earth orbit without human assistance.
A research team from Chongqing University developed the payload, known as ShennongKaiwu 2. A Kuaizhou 11 Y8 carrier rocket launched the system from the Jiuquan Satellite Launch Center in northwest China on Dec. 13, sending it into orbit to begin biological testing.
Miniature ecosystem supports life in orbit
Data and images transmitted back to Earth showed the capsule maintained a stable internal temperature of about 30 degrees Celsius (86 degrees Fahrenheit). Researchers said the microgravity environment helped sustain these conditions, allowing the pupa to develop into an adult butterfly.
The experimental capsule functioned as a miniature ecosystem designed to replicate natural cycles found on Earth. Plants inside the system produced oxygen and could serve as a food source. Microorganisms processed waste and helped regulate air quality. The entire system operated without crew involvement.
A butterfly has successfully emerged from its pupa while orbiting Earth in a recent space experiment, marking a step forward in verifying the feasibility of long-term operation of complex life support systems in orbit, Chinese researchers announced on Monday.
The butterfly… pic.twitter.com/MxafQ7R9Y3
— China Science (@ChinaScience) February 3, 2026
The butterfly lived for several days inside the 14.2-liter (3.75-gallon) chamber, which weighed 8.3 kilograms (18.3 pounds).
It moved freely, fluttered its wings, and rested on leaves. Xie Gengxin, director of Chongqing University’s Space Science and Technology Research Institute and chief designer of the payload, said the butterfly adapted faster than expected.
Many had assumed flight would be difficult in microgravity, but observations showed the insect adjusted quickly.
Researchers used the experiment to study multiple challenges linked to space biology. These included changes in body fluid behavior, limitations in material movement under microgravity, and exposure to space radiation.
China hatches a butterfly in space without human intervention
To better reflect real space conditions, the team avoided using radiation shielding, active temperature controls, or full-spectrum lighting. Qiu Dan, deputy chief designer of the payload and head of its biological system, said the fully unmanned process set the experiment apart from similar studies conducted aboard the International Space Station.
Xie said the results support the feasibility of running complex life-support systems in orbit for extended periods. He explained that such systems are essential for future deep-space missions. He also outlined long-term goals for space-based agriculture, where insects such as butterflies could help pollinate plants in orbital or planetary farms.
Xie’s team previously achieved another milestone in 2019, when they grew the first green leaf on the moon during China’s Chang’e 4 robotic mission.
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