How Do the Astronauts Keep the International Space Station Clean?

The International Space Station (ISS) is a unique environment where traditional cleaning methods need to be adapted to fit the demands of space travel. Maintaining a clean and functional environment is crucial for the health and safety of the astronauts aboard. This article explores the cleaning techniques and products used by astronauts to keep the ISS in top condition.

Introduction to ISS Cleaning

The ISS doesn't get as dirty as one might think due to the controlled environment and meticulous maintenance. However, small debris like lost hardware or spilled materials can accumulate. Astronauts use advanced cleaning technologies, specifically tailored for the space environment, to maintain hygiene and sanitation.

Cleaning Tools and Products

Vacuum Cleaners

Astronauts use vacuum cleaners to collect floating debris and water. These vacuums are designed to handle low-gravity conditions and can separate and reclaim water through evaporation. When the vacuum cleaner bag is full, it's discarded with the rest of the trash in a re-entry capsule to Earth.

Household Products in Space

Toothpaste, for instance, is squeezed directly onto a pre-impregnated sponge and used for body washing, with minimal water usage. Astronauts often swallow toothpaste to avoid creating a mess, or gently wipe it onto a towel that is then discarded. They use a non-water-based shampoo that lathers easily in a microgravity environment.

Standard Vacuum Cleaner

Despite being within close proximity to the vacuum of space, astronauts do have access to a standard vacuum cleaner. This might seem ironic but it's essential for cleaning delicate surfaces and gathering small debris. The ESA emphasizes the importance of keeping a clean house in space to maintain the integrity of the lab-like conditions and prevent dust from interfering with equipment.

Tim Peake's Experience

Astronaut Tim Peake has firsthand experience with ISS cleaning procedures. He and his colleagues use liquid detergent, disposable plastic gloves, and multi-purpose wiping cloths to keep the station clean. They also change the air purification systems' filters and clean the walls and floors. One interesting tidbit is that they have used Huggies baby wipes for various cleaning tasks on the ISS. Astronaut Jeffrey Williams mentioned in his Expedition 13 that they have employed this household product, which surprisingly works well in the unique space environment.

Conclusion

The cleaning of the International Space Station is a fascinating blend of advanced technology and familiar household products. By adapting traditional cleaning techniques, astronauts ensure that the ISS remains a safe and functional habitat for extended missions.

Key Points Recap

Vacuum cleaners are used to collect floating debris and water. Minimal water usage is key for efficient and effective cleaning. Standard cleaning products like toothpaste, sponge, and baby wipes are adapted for space. Cleaning is performed diligently to maintain a hygienic and laboratory-like environment.

For more information on the maintenance and cleanliness of the International Space Station, refer to interviews with astronauts like Clayton Anderson and Tim Peake.