The International Space Station, as seen in November 2021. Prominent at center in this view are the cymbal-shaped UltraFlex solar arrays of the Northrop Grumman Cygnus space freighter.

Roscosmos/NASA The fully assembled International Space Station is a wonder of engineering. It has a mass of nearly a million pounds (420,000 kg) and can host six astronauts at a time in the ...

An exterior view of the International Space Station. NASA The bedrooms aren't much bigger than phone booths – basically a bag to keep you in place, and a couple of laptops.

The International Space Station, or ISS, is an orbital laboratory and has hosted more than 250 people since 1998.