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international space station anniversary ISS living in space orig cm_00000116
international space station anniversary ISS living in space orig cm_00000116

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    Living on the most expensive object ever built

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Living on the most expensive object ever built

It has been 15 years since astronauts started living on the International Space Station. CNN's Rachel Crane explains the history and future of the most expensive object ever built.

Living on the most expensive object ever built

It has been 15 years since astronauts started living on the International Space Station. CNN's Rachel Crane explains the history and future of the most expensive object ever built.