Astronauts fix space station's robotic arm in 7-hr spacewalk
Completing the year's first spacewalk, NASA astronauts Mark Vande Hei and Scott Tingle spent 7 hours and 24 minutes outside the International Space Station to replace a hand on its robotic arm, used to grapple visiting vehicles. This marked the 206th spacewalk in support of station maintenance since 1998, logging in a total of over 53 days for the same.