NASA Astronauts Have A Special Space Cup For Drinking In Zero Gravity - Chowhound

So, how does this space cup work its magic? The secret, according to the cup's patent, lies in a cleverly designed channel that runs along the cup's interior wall, from the bottom to the rim. This channel, formed by an acute angle, harnesses the power of capillary action — the same phenomenon that allows trees to draw water upwards from their roots — to give the user a semi-natural drinking experience even when…