Today marks the end of an era. Three decades of missions came to a close this morning as the Space Shuttle Atlantis touched down in Florida after a 13-day trip to the International Space Station. All told, the 135 space shuttle missions have racked up more than 542 million miles in low earth orbit. Commander Chris Ferguson piloted the Atlantis to a safe landing at 5:52 a.m., and the spacecraft will soon undergo processing and decommissioning. It has been an emotional experience for residents and workers along Florida's Space Coast -- some 9,000 shuttle engineers, technicians, and other staff are being laid off, and the main tourism draw for the area has come to an end. Shown here, for one last time, is a look at a full shuttle mission, STS-135, the final flight of Atlantis. Also, be sure to see The History of the Space Shuttle, an earlier entry on In Focus.