In April 2001, the crew of Shuttle Endeavour bolted a Canadian-built robotic arm to the outside of the International Space Station knowing that pieces of it would eventually wear out, and twenty-five

NASA is preparing for a spacewalk to replace a failed wrist joint on the International Space Station's Canadarm2 robotic arm. The arm, which has been in operation since 2001, experienced a motor current failure that rendered it immobile.
Why it matters
Canadarm2 is essential for ISS maintenance and cargo operations; its repair is critical for the continued safety and functionality of the space station.
Canadarm2 has been bolted to the outside of the International Space Station since April 2001, working in shifts measured in years rather than hours.
The report is a factual account of a technical issue and planned maintenance operation by a government agency.
Get smarter about the news
Sign up free for a feed built around what you actually care about, Dive Deeper research on any story, and the full text of every article.
Create free accountAlready have an account? Sign in