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 ...

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

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.