 Two astronauts are spending extra time at the International Space Station as NASA and Boeing troubleshoot capsule problems that popped up on the way there. The veteran astronauts expected to stay for a week or so at the space station during a test flight of Boeing's new Starliner capsule, the first with the crew. But their return trip has been put on hold while the thruster trouble and helium leaks are analyzed. On Friday, NASA said there is no rush to bring the astronauts home and more tests on the ground would be done first.