Earth Microbes Discovered in Asteroid Ryugu Sample, Raises Contamination Concerns

A study has confirmed that terrestrial microbes colonised a Ryugu asteroid sample after its return to Earth in 2020. The micro-organisms were found to proliferate upon exposure to Earth’s atmosphere, raising concerns over contamination risks in planetary exploration. Published in Meteoritics & Planetary Science, the findings underline the need for robust protocols to …

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