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Search title: Dr. Sebastian Voltmer on Twitter: "Yesterday I witnessed the #spacewalk shortly after sunset. Here comes a first photo. #ESA #astronaut Matthias Maurer was just "climbing" at this moment. The rod-shaped structure (Canadarm2) is the robot arm. Greetings from Matthias Maurers hometown - it was very exciting. #iss https://t.co/39Q7YlG64u" / Twitter
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