International Space Station (ISS)

International Space Station (ISS)

The International Space Station (ISS) is a space station, or a habitable artificial satellite, in low Earth orbit. Its first component launched into orbit in 1998, and the ISS is now the largest artificial body in orbit and can often be seen with the naked eye from Earth. It is the most expensive object ever constructed. In 2010 the cost was expected to be $150 billion.

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