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The third American orbiter, Atlantis, scheduled for launch in the coming days for his final mission. NASA has indeed made ​​the decision to subcontract the supply of the ISS to private companies (SpaceX and Orbital Space Corporation) for cost reasons. European and Japanese cargo ships, however, some continue refueling missions. The Soyuz will continue to lead and bring the rotating crews of the ISS.
The ISS initiative was taken in 1984 by U.S. President Ronald Reagan. The scientific objective is to conduct experiments in microgravity. On the diplomatic front, is one of the largest international collaborations. The United States, Russia (which joined the project in 1993), Canada and eleven European countries, including France, are participating actively. The first module was launched in 1998. The station is now 100m long and contains several laboratories and a habitation module. Two Soyuz rescue are anchored permanently in case of trouble. About 2500 square meters of solar panels provide 100 kilowatts of electricity required to self-structure. The engines of cargo ships moored in turn allow the correction of the regular orbit of the ISS which is steadily losing altitude.