How To Use Module Chocolate in orbit. The demand for efficiency and zero-gravity functionality in space keeps aerospace engineers busy.
Many everyday products require gravity.
Toilets, desks, chairs, breast pockets and even shopping bags use gravity to hold things in place. Pinball machines depend on the ball rolling downward, washing machines require water and soap to flow down, grandfather clocks need the pull of gravity to tug the pendulum into motion. Simple modifications, like Velcro on everything, go a long way. Engineers must keep other limitations in mind as well when designing space equipment. Power, water and space are limited in spacecraft - and there's no place to throw away the garbage.