Agnirva Space Premier League - Expedition #32522: Micro Threats in Space: Studying ISS Hull Deterioration and Microbial Growth

The vacuum of space may seem inhospitable, but even there, tiny threats can compromise massive engineering feats. The experiment titled “Experimental Studies Of The Possible Development Of Microscopic Deterioration Of ISS RS Module Structural Elements…” addresses this very issue by examining how external environmental factors and microflora affect the Russian Segment (RS) of the ISS.

Led by Oleg Saprykin and Elena Shubralova from TSNIIMASH, this extensive study spanned multiple expeditions (25 through 44). It focused on understanding how microscopic life forms and atmospheric components interact with the ISS’s pressure hull—especially areas covered by multilayer insulation (MLI).

Over time, even the strongest materials degrade, especially when exposed to atomic oxygen, temperature extremes, and microgravity. Add to that microbial colonies that can survive and even thrive in crevices, and the result could be accelerated deterioration of critical structural elements.

The researchers collected data on the composition of materials, environmental exposure, and microbial activity. Their findings are crucial for designing better coatings, insulation materials, and maintenance protocols.

This experiment is a cornerstone of Technology Development and Demonstration, ensuring that space habitats remain safe and sustainable for long-duration missions. It also contributes to our understanding of how life persists and evolves in extreme environments—insights that may inform astrobiology research and planetary protection policies.

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