November 9, 2017 / Modified nov 9, 2017 12:54 p.m.

A Year in Space

Follow Scott Kelly’s 12-month mission on the International Space Station, from launch to descent.

year_space_scott_mark_hero Expedition 43 NASA Astronaut Scott Kelly, left, and his identical twin brother Mark Kelly, pose for a photograph Thursday, March 26, 2015 at the Cosmonaut Hotel in Baikonur, Kazakhstan. (PHOTO: PBS)

Follow astronaut Scott Kelly’s record-breaking 12-month mission on the International Space Station, from launch to landing, as NASA charts the effects of long-duration spaceflight by comparing him to his identical twin on Earth, astronaut Mark Kelly.

A Year in Space, Wednesday at 8 p.m. on PBS 6.

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