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Ever since the first US astronaut visited space, 59 years ago, NASA has struggled to find clean, comfortable ways to get people restroom facilities in space.

The first options were rather crude, makeshift solutions (giải pháp tạm thời) that resulted in some big messes (hỗn độn).

Alan Shepherd, the first person to go, peed in his pants on the launchpad in 1961, but luckily was "totally dry by the time we launched," he later said. The Apollo astronauts had to use roll-on cuffs to pee, and plastic bags for everything else. Sometimes waste escaped, and floated around.

After the Apollo missions ended in 1975, engineers described defecation (ỉa) and urination (đái) as the "bothersome aspects of space travel."

Tags: science

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