Japan's Hayabusa spacecraft is on track to attempt a sampling of asteroid Itokawa on November 19. In a rescheduled practice run on November 9, the craft has approached within 230 feet (70 meters) of the asteroid during a descent test that verified the probe's guidance and navigation functions. Engineers handling the Hayabusa spacecraft have clarified the issues that led to the cancellation of a November 4 landing rehearsal. An onboard navigation computer detected anomalous information during the practice run. The problem resulted in an abort command being transmitted to the probe by Earth controllers, thereby stopping the rehearsal. Subsequently, the...