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A Review of Environmental Challenges Facing Martian Colonisation and the Potential for Terrestrial Microbes to Transform a Toxic Extraterrestrial Environment

Author

Listed:
  • Daniel Keaney

    (Department of Biological Sciences, Munster Technological University, Bishopstown, T12 P928 Cork, Ireland)

  • Brigid Lucey

    (Department of Biological Sciences, Munster Technological University, Bishopstown, T12 P928 Cork, Ireland)

  • Karen Finn

    (Department of Analytical, Biopharmaceutical and Medical Sciences, Atlantic Technological University Galway City, Old Dublin Road, H91 T8NW Galway, Ireland)

Abstract

Mars is a focus of New Space Age exploration and colonisation, but there are significant challenges to successful colonisation by humankind. Environmental microbes play a key role in supporting the ecosystems of Earth, especially within the biodegradation and bioremediation sectors. However, the repurposed roles of microbes on Mars and their associated uses to colonists remain incompletely defined. The aim of this review was to examine the key roles of microbes on Earth and how they have been employed by humans to tackle four pivotal environmental challenges associated with the colonisation of Mars, namely the physical environment, the creation of a hospitable environment via terraforming, environmental sustainability and life support, and finally, renewable processing technologies. Some species of microbes were found to be tolerant of the ever-changing physical environment on Mars (freeze–thaw and UVC exposure) making them useful for bioremediation applications. Employing perchlorate-remediating microbes for their ability to bioremediate the soils of sodium perchlorate, which is present in Martian soils, in addition to their innate ability to cycle nutrients through the biosphere showed promise in establishing sustained crops to support colonists. The employment of terrestrial environmental microbes is a necessary part of overcoming key environmental challenges to successfully colonise Mars. Without this, future New Space exploration is unlikely to be successful.

Suggested Citation

  • Daniel Keaney & Brigid Lucey & Karen Finn, 2024. "A Review of Environmental Challenges Facing Martian Colonisation and the Potential for Terrestrial Microbes to Transform a Toxic Extraterrestrial Environment," Challenges, MDPI, vol. 15(1), pages 1-21, January.
    • Handle: RePEc:gam:jchals:v:15:y:2024:i:1:p:5-:d:1317851
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    References listed on IDEAS

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