International Space Station
The International Space Station in space with Earth in the background

The International Space Station is shown in an image taken by an astronaut flying in a space shuttle. Image Credit: NASA

      a laboratory that circles Earth, where people live and work



Sentences:
Construction of the International Space Station began in 1998.

The space station circles Earth once every 90 minutes.



More Information:
http://www.nasa.gov/externalflash/ISSRG/
http://www.nasa.gov/mission_pages/station/main/index.html