Apparently the cost of transporting water to the International Space Station is so cost-prohibitive ― $48,000 per liter! ― that NASA engineers have had to find cheaper ways of taking it into space. And I’ll give you one guess as to what that cheaper way is…
According to America’s Secret Space Heroes, a documentary series airing Sundays on the Smithsonian Channel, NASA scientists have discovered the elusive method of turning pee into potable drinking water. It involves spinning it around really, really fast and… well, I’ll let NASA engineer Jennifer Pruett explain:
“This whole part is the centrifuge that’ll spin. So the urine will be sprayed out along the back wall as it spins,” she said. “The heavy dense fluid will stick to the wall and the lighter steam as it evaporates out will be sucked through the centre through that mesh onto the next part of the system.”
The end result is what she calls “good clean urine distillate” that gets put into a water processor for further filtration before the astronauts actually consume it.
Watch below. (via HuffPo)