Sure, there's no air in space. But once you've overcome that
rather urgent deficiency, you've got to deal with another one:
no water. Thanks to science, astronauts can solve that problem
by just drinking pee. Zero-G YouTuber and ISS astrodinaire Chris
Hadfield explains.  Until a few years ago, water had to be
shipped up to spacestronauts in bags, alongside their food, but
a fairly monstrous centrifugal distiller has changed all that,
and the result is purified pee that's cleaner than any water
you've had in your mouth recently. Good to know we'll be ready
to mine for spice on Arrakis when the opportunity presents
itself. Hopefully by then the distiller will be a tad smaller.
[YouTube]