MICROBES IN INTERNATIONAL SPACE STATION By:- Farman khan Strictly speaking that isn’t true. But cleaning in space isn’t something that you tend to hear much about, even though keeping the International Space Station (ISS) spic and span is a top priority for the astronauts who call it home. This is because the ISS is a closed system, meaning the air inside has to be continually recycled. To make sure it stays clean and fresh, the environmental control systems are packed with air filters to get rid of dust and germs. The astronauts also have to do cleaning and vacuuming, and it is a regular part of life aboard the space station. All of this rubbish has to go somewhere, and normally the space station just jettisons all its trash in a giant capsule that burns up in the Earth’s atmosphere. But to researchers, the dust inside the air filters and vacuum cleaner bags is too valuable to just throw away. Instead it makes its way back to Earth, where it ends up in the hands of Dr Kasthu...