Spacewalking astronauts toil outside Japanese lab (AP)

In this image from NASA TV astronaut Michael Fossum works to install the second of two television cameras onto the Japanese Kibo module during a spacewalk at the international space station, Thursday, June 5, 2008. (AP Photo/NASA TV) AP - Spacewalking astronauts worked on the outside of Japan's shiny new science lab Thursday, installing cameras and removing covers.