MANILA, Philippines โ Scientists from Chinaโs Chongqing University have successfully raised a butterfly from its chrysalis while orbiting Earth, a rare biological milestone that offers new insights into how life can survive and develop in the microgravity environment of space.
The butterfly was sealed inside a compact, self-sustaining experimental ecosystem developed by the universityโs research team and launched aboard a Kuaizhou-11 Y8 carrier rocket on December 13, 2025.
Adaptation to microgravity
Photos transmitted from orbit show the butterfly moving inside the capsule, resting on leaves and fluttering its wings โ behavior researchers say indicates a notable degree of adaptation to microgravity.
Data sent back to Earth confirmed that pressure, temperature, and humidity inside the payloadโs sealed cabin remained stable throughout the experiment, a critical requirement for sustaining life in space.
Maintaining a closed-loop ecosystem in orbit is technically demanding, as microgravity alters fluid behavior and disrupts the transport of materials essential for life. These conditions make it difficult to keep a miniature ecosystem healthy over time.
According to payload chief designer Xie Gengxin, the team overcame a major engineering challenge by resolving magnesium alloy oxidation in high-humidity conditions. This allowed them to build a lightweight yet durable payload structure weighing just 8.3 kilograms, which protects the ecosystem during flight and operation.
The system was designed to mimic Earthโs ecological cycles. Plants such as chile pepper generate oxygen and potential food for the butterfly, while microorganisms break down waste to help maintain a stable air composition, creating a fully unmanned and self-sustaining environment.
Butterfly in space
โThe successful emergence of the butterfly is not just about having an insect in space,โ Xie said. โIt is an important step in verifying whether complex life-support systems can operate reliably for long periods in orbit.โ
He added that completing a critical life stage under extreme conditions highlights the resilience of terrestrial life and provides valuable data for future deep-space missions, including long-duration human spaceflight.
The research team said its next phase will focus on long-term in-orbit testing, including the payloadโs structural durability, the adaptability of its components to space conditions, and the sealing performance of the capsule over extended periods.
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