India, June 25 -- NASA astronauts Chris Williams and Jessica Meir are preparing for a spacewalk next week to repair a malfunctioning wrist joint on the Canadarm2 robotic arm aboard the International Space Station (ISS).

NASA announced that the spacewalk is scheduled to begin at 8.35 am EDT (6.05 pm IST) on June 30 and is expected to last about six hours and 40 minutes. During the mission, the astronauts will replace a faulty wrist joint on Canadarm2, a critical piece of station equipment that has been operating for more than 25 years.

NASA and the Canadian Space Agency (CSA) investigated the issue and concluded that the damaged component must be replaced during a spacewalk. A spare wrist joint is already available on the station and wil...