Two ISS Astronauts Performing Spacewalk (VIDEO)

Flight engineers Mark Vande Hei of NASA and Norishige Kanai of the Japan Aerospace Exploration Agency are moving components for the International Space Station's robotic system into long-term storage.
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The Expedition 54 astronauts are performing the station's third spacewalk of the year. The astronauts were expected to spend some six and a half hours in open space.

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