Revolutionary Breakthrough: IISc Researchers Unveil Bacteria-Based Technique to Restore Lunar Bricks
In a groundbreaking development for lunar exploration, research from the Indian Institute of Science (IISc.) has introduced an innovative, bacteria-based method to repair lunar bricks, potentially aiding the construction of sustained habitats on the moon. The IISc. team’s work aligns with future missions like NASA’s Artemis program, which aims to establish permanent bases on the lunar surface as humanity looks beyond flyby missions to long-term settlement.
Central to this advancement is the use of lunar regolith, the moon’s abundantly available soil comprising a complex mix of minerals and rocks, which negates the prohibitive cost of transporting materials from Earth. Researchers at IISc.’s Department of Mechanical Engineering, led by Associate Professor Aloke Kumar, have harnessed the capabilities of the bacterium Sporosarcina pasteurii to convert lunar soil simulants into brick-like materials. The bacterium facilitates the formation of calcium carbonate crystals, which, combined with natural additives like guar gum, effectively bind soil particles. This eco-friendly process offers a sustainable alternative to traditional cement.
Notably, the team has explored an additional technique, known as sintering, which involves heating a mixture of soil simulant and polyvinyl alcohol, producing bricks with exceptional strength. “It’s one of the classical ways of making bricks,” noted Prof. Kumar, highlighting their durability for housing structures. Despite its scalability — as multiple bricks can be simultaneously fired in a furnace — sintered bricks remain vulnerable to the moon’s harsh environment, where extreme temperature fluctuations and constant solar winds pose significant risks.
Associate Professor Koushik Viswanathan, a study co-author, pointed out the brittleness of sintered bricks in such conditions: “If you have a crack and it grows, the entire structure can quickly fall apart.” To address this vulnerability, the team innovatively turned to their microbial solution once again. By introducing a bacteria-based slurry into artificial defects created in sintered bricks, they found the organisms not only reinforced the material but also enhanced its resistance to lunar conditions.
These reinforced bricks successfully tolerated temperatures between 100°C and 175°C, marking a promising breakthrough for future lunar architecture. As the team advances this research, they are drafting a proposal to send their bacterial samples aboard India’s Gaganyaan mission, intending to observe its behavior under microgravity in space.
The potential application of these bacteria-enhanced materials on the lunar surface represents a significant leap forward in space exploration technology. With effective solutions to maintain the integrity of lunar habitats, missions can focus on the next frontier with sustainable, practical strategies informed by cutting-edge earthbound science.
This milestone not only underscores the global drive towards sustained lunar presence but also points to promising intersections between biology and engineering, paving the way for innovative strategies in extraterrestrial construction. As scientists aim to push the boundaries of our celestial reach, these developments at IISc. contribute to the foundational elements necessary for future lunar and Martian colonization.
Published – April 01, 2025, 05:09 pm IST.
Original Source: https://www.thehindu.com/sci-tech/science/iisc-researchers-develop-bacteria-based-technique-to-repair-space-bricks-in-lunar-habitats/article69399623.ece
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Publish Date: 2025-04-01 17:09:00
