 Two NASA astronauts are still at the International Space Station, stuck there in a way, even though they were supposed to be back here on Earth weeks ago. NASA astronauts Butch Wilmore and Sonny Williams' eight-day test flight entering a second month. While engineers on the ground investigate the cause of helium leaks and thruster problems, Boeing's new Starliner spacecraft encountered on its way to the International Space Station in early June.