21 July 2011, 5:54:00 a.m. Eastern Daylight Time, (21:54:00 UTC) Space Shuttle Atlantis on mission STS-135, landed at Kennedy Space Center, Cape Canaveral, Florida. Wheel stop was 5:57:54 a.m., EDT.
This 13-day mission had been the thirty-third flight for Atlantis. It had spent a total of 307 days in Earth orbit.
This brought to a close The Era of American Manned Space Flight which began 50 years, 2 months, 15 days, 20 hours, 23 minutes, 41 seconds earlier with the launch of Alan Shepard in Freedom 7, 5 May 1961, 09:34:13 EST.
The benefits of the NASA programs over these decades are immeasurable.
8 July 2011: At 11:29:03 a.m., Eastern Daylight Time, the Space Shuttle Atlantis (OV-104) was launched on Mission STS-135 from Launch Complex 39A at the Kennedy Space Center, Cape Canaveral, Florida. This was the very last of 135 flights for the United States space shuttle program. The mission was to carry assembly modules and supplies to the International Space Station in Low Earth Orbit. The mission had a total elapsed time of 12 days, 18 hours, 28 minutes, 50 seconds. Atlantis arrived at the Shuttle Landing Facility 21 July 2011 at 09-57 UTC.
The mission commander was Captain Christopher J. Ferguson, U.S. Navy, on his third space flight. Atlantis‘ pilot for STS-135 was Lieutenant Colonel Douglas G. Hurley, United States Marine Corps, on his second shuttle flight. Mission specialists were Sandra Hall Magnus, Ph.D. and Colonel Rex J. Waldheim, U.S. Air Force. This was Dr. Magnus’ third space flight. She spent a total of 157 days, 8 hours, 42 minutes in space. Colonel Waldheim, the mission flight engineer, was on his third shuttle mission.
Shuttle Orbiter Atlantis first flew 3 October 1985 and made 33 space flights. It spent 306 days, 14 hours, 12 minutes, 43 seconds in space flight. Atlantis orbited the Earth 4,848 times and traveled miles 125,935,769 (202,673,974 kilometers) When it was retired at the end of STS-135, Atlantis had flown just one-third of its designed operational life. The space ship is on display at the Kennedy Space Center.
Since the space shuttle fleet was retired, the United States of America has had no manned spaceflight capability.