Space shuttle moves to avoid chunk of space junk

Confronted with orbiting junk again, NASA ordered the astronauts aboard the linked space station and shuttle Discovery to move out of the way of a piece of debris Sunday. Discovery's pilots fired their ship's thrusters to reorient the two spacecraft and thereby avoid a small piece from a 10-year-old Chinese satellite rocket motor that was due to pass uncomfortably close during Monday's planned spacewalk.