When hurtling through the cosmos, the last thing an astronaut wants to worry about is what to do when nature calls.
원문출처 : http://www.cnn.com/2017/02/16/tech/nasa-space-poop-challenge-winner-announced-trnd/index.html
원문출처 : http://www.cnn.com/2017/02/16/tech/nasa-space-poop-challenge-winner-announced-trnd/index.html