Astronauts Embark on Cosmic Quest to Discover Hidden Microbes on Space Station’s Surface

Astronauts are slated to exit the International Space Station to gather microbiological specimens during crew spacewalks for the ISS External Microorganisms study. This research aims to collect samples from areas near life support system vents to investigate if the spacecraft emits microorganisms, the quantity involved, and the distance they may disperse.

This study could assist scientists in comprehending if and how these microorganisms endure and reproduce in the extreme conditions of space, as well as their potential behavior on planetary bodies like the Moon and Mars. Extremophiles, or microorganisms capable of thriving in severe environments, are also of interest to sectors on Earth such as pharmaceuticals and agriculture.

Spacecraft and spacesuits undergo extensive sterilization prior to missions; however, humans harbor their own microbiomes and continually regenerate microbial populations. It is crucial to understand and evaluate how effectively existing designs and protocols prevent or mitigate the transfer of human contamination.  The findings could indicate whether modifications are necessary for crewed spacecraft, including spacesuits, intended for exploration of locations where life might exist either currently or in the past.

Discover more about how scientists monitor microbes aboard the space station.