In Photos: The International Space Station Turns 20

The Russian-made Proton booster blasts off with the Zarya module from Baikonur cosmodrome in Kazakhstan on November 20 1998. This was the first module of the new International Space Station.

Photograph: Sergei Karpukhin

The Russian-built Zarya (L) and US-built Unity modules hover near Earth’s horizon shortly after leaving the space shuttle Endeavour’s cargo bay in 1998.

Photograph: Nasa/Reuters