After an unexpected nine-month stay aboard the International Space Station (ISS), Indian-origin astronaut Sunita Williams is finally set to return to Earth. Originally scheduled for just eight days, her mission was extended after the Boeing Starliner spacecraft encountered technical issues. Now, NASA and SpaceX are preparing for a March 12 rescue mission to bring Williams and fellow astronaut Butch Wilmore back home. On this occasion lets understand the life of our astronauts aboard ISS in space.