New Delhi, March 20 -- Williams' and fellow Nasa astronaut Butch Wilmore's mission aboard a Boeing spacecraft has finally ended and they are safely back on Earth. A leaking propulsion tank and faulty thrusters in the Boeing Starliner threw return plans off schedule. A subsequent human spaceflight had to be dedicatedly planned for the stranded astronauts, which took time due to natural scheduling challenges. Elon Musk, who runs SpaceX, claimed that he had "offered to bring Williams back" more than six months ago, but Nasa administrator Bill Nelson has denied this. Amid this political slugfest and engineering failure, Williams and Wilmore ended up spending over nine months in space. Eventually, SpaceX's Crew Dragon flew Williams and Wilmore...