23. The Space Station Has Had Nearly 20 Years of Continuous Residency
It took over two years of construction before the space station was ready for people to live on board. The three-member crew of Expedition One included NASA astronaut William Shepard and cosmonauts Sergei Krikalev and Yuri Gidzenko.
They arrived at the orbiting outpost on Nov. 2, 2000, and the space station has been continuously occupied ever since.
At first, the station’s crew could only support three people, and that was reduced to only two for a while. Today, the current expedition crew has six members.
Over the past 20 years, 220 people have lived aboard the space station as resident crew members, with another large group of people visiting the orbiting outpost to help with construction and deliver new supplies.