A study published in Meteorology & Planetary Science reports the discovery of terrestrial microbes in samples returned from Japan’s asteroid Ryugu. Hayabusa2 missionAccording to the researchers, these microbes, identified as being of Earth-based origin, had colonized the samples after their return to Earth in December 2020. The findings highlight concerns about the resilience of terrestrial life forms and the challenges of maintaining uncontaminated extraterrestrial samples for scientists. Analysis.
Microbial growth observed on asteroid samples
According to Space.com reportPlanetary scientist Dr. Matthew Ganz of Imperial College London has confirmed that microorganisms have been detected on a piece of the asteroid. Dr. Ganz said during an interview publication It was observed that the microbes appeared on the rock and multiplied before dying. It was clarified that the bacteria were not extraterrestrial, as they evolved only after contact earth’s atmosphere,
According to reports, the sample, which was initially tested using nano-X-ray computed tomography, showed no signs of biological presence. However, after exposure to the Earth’s environment, rod and filament-shaped structures resembling bacteria were identified. The population of microorganisms reportedly increased from 11 to 147 within a week, which is attributed to the flexible nature of Earth’s microorganisms.
Implications for space exploration
Research has noted that terrestrial pollution poses a risk to planetary exploration. Dr Ganz stressed that microorganisms capable of surviving on extraterrestrial materials could complicate future missions aimed at detecting alien life. He told Space.com that this shows how easily Earth-based microorganisms can take over alien materials.
The study’s findings underline the need for stricter planet protection protocols. These measures, designed to reduce biological contamination of extraterrestrial environments, are being implemented to ensure the integrity of future missions.
According to sources, further investigation is ongoing Ryugu Samples and material being taken from asteroid Bennu planned toScientists aim to reduce the pollution risks seen in this study.