NASA cannot decide whether astronauts should wash their underwear

By Mark Harris

Astronauts will wear matching t-shirts on the ISS in 2019

NASA Johnson / Flickr

NASA and Procter & Gamble (P&G) have signed an agreement to develop the first detergent for washing clothes in space – despite a long-standing recommendation against astronauts doing their own laundry.

While astronauts wear spacesuits when working outside the International Space Station (ISS), they mostly wear normal clothing. Once too dirty to be carried, they are either returned to earth as trash or dumped in a capsule with other debris to be burned in the atmosphere.

Under the new Space Act Agreement that was signed …