Breathtaking new photos of Space Shuttle Discovery preparing for its final flight

For the last several days, Space Shuttle Discovery has been preparing for one final flight. Tomorrow, weather permitting, Discovery will make the trip from Florida's Kennedy Space Center to the Smithsonian's National Air and Space Museum's Steven F. Udvar-Hazy Center in Chantilly, VA from atop a repurposed Boeing 747… »4/16/12 5:00pm4/16/12 5:00pm