India, June 20 -- For the sixth time in less than a month, the Axiom-4 (Ax-4) mission to the International Space Station (ISS) with group captain Shubhanshu Shukla on board has been put on hold.

NASA, in a statement, said the US space agency needs additional time to continue evaluating International Space Station operations after recent repair work in the aft (back) most segment of the orbital laboratory's Zvezda service module. "Because of the space station's interconnected and interdependent systems, NASA wants to ensure the station is ready for additional crew members, and the agency is taking the time necessary to review data," said the statement.

As a consequence, NASA, Axiom Space, and SpaceX will not go ahead with the launch on J...