Why NASA astronauts are waiting to return on Boeing’s Starliner

Boeing’s Starliner capsule “Calypso” has been in space for 71 days and counting as the company and NASA try to identify whether its safe for its crew to return.Boeing’s Starliner capsule “Calypso” has been in space for 71 days and counting as the company and NASA try to identify whether its safe for its crew to return.