A solution for these challenges would be full-body 'stillsuits' like those in the blockbuster Dune franchise, which absorbed and purified water lost through sweating and urination, and recycled it into drinkable water. Now, this sci-fi is about to become reality, with a prototype novel urine collection and filtration system for spacesuits.

The design, by researchers from Cornell University, is published in Frontiers in Space Technology.

"The design includes a vacuum-based external catheter leading to a combined forward-reverse osmosis unit, providing a continuous supply of potable water with multiple safety mechanisms to ensure astronaut well-being," said Sofia Etlin, a research staff member at Weill Cornell Medicine and Cornell University, and the study's first author.