Listen to this article WEST LAFAYETTE, Ind. â For astronauts to go on long missions to the moon or Mars, they'll need a refrigerator. But todayâs fridges arenât designed to work in zero gravity â or upside down if oriented that way when a spacecraft lands on another planet. A team of engineers from Purdue University, Air Squared Inc., and Whirlpool Corporation is working on building a fridge for zero gravity that operates in different orientations and just as well as the one in your kitchen, giving astronauts access to longer-lasting and more nutritious food. In May, the ...