Nasa marks 15 years on the International Space Station – video interview
by Guardian Staff from on (#SC4Z)
Nasa marks 15 years of humans living on board the International Space Station (ISS) on Monday. Members of the ISS Expedition 45 spoke from on board the ISS to mark the milestone occasion. ISS commander Scott Kelly says the space station serves as the most important experiment they conduct as a moving vehicle keeping humans alive for long periods of time
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