FILE - In this June 14, 2010 file photo, Hayabusa probe asteroid exploration project manager Junichiro Kawaguchi speaks with a scale model of the asteroid Itokawa, foreground, during a press conference at Japan Aerospace Exploration Agency (JAXA) in Sagamihara, near Tokyo. The Hayabusa's capsule that returned to Earth in June successfully after a seven-year, 4 billion-mile (6 billion-kilometer) journey captured dust from an asteroid for the first time in history, scientists said Tuesday, Nov. 16, 2010. (AP Photo/Itsuo Inouye, File)