In October 2022, China completed its Tiangong space station by adding the final module. Since then, something unusual has been discovered: a new microbe floating around in low Earth orbit.
Scientists examined samples from inside Tiangong and found a type of bacteria never seen on Earth before. This fascinating discovery, published in the International Journal of Systematic and Evolutionary Microbiology, emphasizes the importance of studying this microbe to ensure astronaut safety.
The new microbe, named Niallia tiangongensis, was found to be quite resilient, thriving in the unique conditions of space. In May 2023, astronauts aboard Tiangong took swabs of the cabin as part of a microbiome study. This research suggested that Niallia tiangongensis may be closely related to Niallia circulans, a bacteria typically found in soil. However, it’s still a mystery whether it evolved in space or came from Earth.
This microbe has some special traits. It can break down gelatin for nitrogen and carbon, which helps it survive harsh environments by creating a protective biofilm. Its ability to form tough spores also aids its survival in extreme conditions.
Interestingly, last year, another study revealed a mutated strain of drug-resistant bacteria on the International Space Station (ISS). Both Niallia tiangongensis and the bacteria from the ISS are unique to space, but they differ in their structures and functions.
While it’s uncertain if Niallia tiangongensis poses any risk to the astronauts, researchers stress the need for further study. Understanding how microbes behave during long space missions is crucial for keeping astronauts healthy and ensuring that spacecraft tools remain functional.
As we explore space more, the findings about these microbes could teach us valuable lessons. They highlight the resilience of life and remind us of the challenges in space exploration. With ongoing research, we can better prepare for the future of human space travel.
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Bacteria,China,Space stations