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This article is from the source 'guardian' and was first published or seen on March 30, 2015 18:48 (UTC). It last changed over 40 days ago and won't be checked again for changes.

You can find the current article at its original source at http://www.theguardian.com/science/ng-interactive/2015/mar/30/scott-kelly-speaks-from-the-international-space-station-live-stream

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