ISS Toilet Explained 🧑‍🚀 🚽 How Astronauts Go in Space #iss #spacestation #toilet #space #shorts

Why It Matters

Efficient waste capture and urine‑to‑water recycling are critical for sustaining crews on the ISS and any future deep‑space outposts, reducing resupply needs and ensuring crew health.

Key Takeaways

• ISS toilet uses suction fan for both urine and solid waste.
• Rotating switch activates fan, creating vacuum for waste capture.
• Solid waste stored in bags, replaced every ~10 days per crew.
• Urine is processed by UPA into potable water on the station.
• Crew must replace bags and maintain container for hygiene and odor control.

Summary

The video walks viewers through the International Space Station’s toilet, showing how astronauts manage personal hygiene in micro‑gravity.

Both urine and solid waste are collected by a single suction system. A rotary switch turns on a fan that creates a vacuum, pulling liquid into a hose and drawing solid waste into a bag attached to a container. The bag is sealed and stored until the container is swapped out, roughly every ten days for a three‑person crew.

The presenter notes the fan’s loud whir as a cue that suction is active and demonstrates the bag‑replacement process, emphasizing that the solid‑waste container is emptied and a fresh bag is inserted for the next user.

Because the urine stream is routed to the Urine Processing Assembly (UPA) and turned into drinkable water, the system closes the loop on the station’s life‑support cycle, illustrating the engineering needed for long‑duration missions and future habitats.

Original Description

The suction fan on the Space Station potty is so loud that, well, everyone knows when you ‘go.’ Italian astronaut Samantha Cristoforetti explains how to turn on that fan and how-to use the International Space Station toilet. -- How to Wash Your Hair In Space: https://www.space.com/21946-how-to-wash-hair-space-video.html

Credit: ESA