The space station's huge new Japanese lab got even bigger Friday when the astronauts attached an attic to it for extra storage. The attic -- essentially a 14-foot shed, or closet, for spare tools and equipment -- was popped atop the 37-foot Kibo science laboratory by astronauts operating the international space station's robot arm. Today, the astronauts will test drive the lab's 33-foot robot arm, which will be used once the Japanese research platform, or porch, arrives next spring.