On Thursday,Kelly will break the US record for longest single space flight. He and twin sign are also section of a unique study on the effects of space on the body The commander of the International Space Station will break the record for the longest single flight by a US astronaut on Thursday by clocking up 216 days in orbit.
Scott Kelly, who performed his debut spacewalk on Wednesday, and will surpass the previous record of 215 days set by the Spanish-American astronaut Michael López-Alegría in 2007.
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Source: theguardian.com