The space shuttle Endeavour has touched down for the last time, but its travels aren't over just yet. Endeavour currently sits at Los Angeles International Airport, where it landed Friday (Sept. 21) atop a modified Boeing 747 jet after a three-day farewell tour that first took off from NASA's Kennedy Space Center in Florida. The shuttle will live out the rest of its days here in the City of Angels, but it's still 12 miles (19 kilometers) from its final destination, the California Science Center. And they will not be easy miles. To reach its museum retirement home, Endeavour will chug down surface streets through the heart of Los Angeles at 2 mph (3.2 kph) or less — a far cry from the space plane's 17,500 mph (28,160 kph) orbital speed.