Zarya, International Space Station Core, launched 1998

The first building block of the International Space Station, the Zarya module, was launched November 20, 1998 from the Baikonur Cosmodrome in Kazakhstan.  Two weeks later, the crew of STS-88 attached the Unity module to Zarya during spacewalks.

At this time, the Russian space station Mir was still occupied so the International Space Station remained uninhabited until Mir was deorbited.  Expedition 1, the first crew to the ISS, arrived in November 2000.  The crew members were  William Shepherd (NASA), Yuri Gidzenko and Sergei Krikalev (Roscosmos).

The ISS is now permanently manned and currently the crew of Expedition 57, Alexander Gerst (ESA), Serena Aunon-Chancellor (NASA) and Sergey Prokopyev (Roscosmos) is station there.