Humans have lived on the ISS for 20 years—here are the coolest discoveries we’ve made

(via Popular Science) Twenty years ago, the Earth stopped being the only place in the universe that humans can call “home.” On November 2nd of the year 2000, three men became the first humans to live outside our planet. For 141 days, American William Shepherd and Russians Sergei Krikalev and Yuri Gidzenko orbited the Earth on the International Space Station (ISS), launched two years before. Over the last two decades, the ISS has housed 241 people from 19 countries.