November 20th marked what could be considered the 20th Anniversary of the International Space Station. It was on that day, in 1998, that Zarya, the first module of what would become the ISS was launched into space. 16 days later the Space Shuttle Endeavour delivered the space station's second module, Unity Node 1 which was then mated with Zarya.
Science in a Minute 112318 20th Anniversary of International Space Station 1346106
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