Is it natural that the ISS gets a window of the world?”
The International Space Station (ISS) is an internationally developed research facility, which is being assembled in low Earth orbit. On-orbit construction of the station began in 1998 and is scheduled for completion by 2011. The station is expected to remain in operation until at least 2015, and likely 2020.[7][8] With a greater mass than that of any previous space station, the ISS can be seen from the Earth with the naked eye,[9] and, as of 2010[update], is the largest artificial satellite orbiting the Earth.[10] The ISS serves as a research laboratory that has a microgravity environment in which crews conduct experiments in biology, human biology, physics, astronomy and meteorology.[11][12][13] The station has a unique environment for the testing of the spacecraft systems that will be required for missions to the Moon and Mars.[14] The ISS is operated by Expedition crews, and has been continuously staffed since 2 November 2000—an uninterrupted human presence in space for the past &0
