launch so much water, you know, a kilogram per liter, and it s a lot. you can t dehydrate your water, you can t put it in a foil pack. they don t have powdered water. you don t have powdered water. so you need to recycle as much as that water as possible. that s a fairly new system for us here on the u.s. part of the space station, where we actually recycle, we take a lot of the most of the water out of urine waste and the condensation from just our breathing and our sweating gets collected in the air-conditioning system here as condensate, and these this water, this recovered water then is recycled, purified, certified, double checked, and then we drink it again. and that s really important. and this kind of a system, it has to work flawlessly. up here, of course, we check it a lot and we have some options. we can go without purifying water for months if we needed to, we have supplies on board, but the we re on the way to