Spacewalking astronauts have been giving a hand to the International Space Station’s big robot arm.
Nasa astronauts Mark Vande Hei and Scott Tingle floated outdoors on Tuesday to install the new mechanical gripper.
Because of the lingering effects of the government shutdown, the spacewalk was not broadcast live on Nasa TV. A Nasa message stated: “We regret the inconvenience.”
Mr Vande Hei performed a similar spacewalk last October, when he replaced the first of two original hands on the Canadian-built arm. This second hand will go on the opposite end of the 58-foot arm.
The bulky bundle of latches needs to be replaced because of wear and tear. It has been in orbit, grabbing cargo capsules and performing other chores, since 2001.
It was the first spacewalk for Mr Tingle, who arrived last month.