Michael Richard Uram "Rich" Clifford is a former United States Army officer and NASA astronaut. Clifford is considered a Master Army Aviator and has logged over 3,400 hours flying in a wide variety of fixed and rotary winged aircraft. Clifford retired from the U.S. Army at the rank of lieutenant colonel. He has logged over 12 hours of spacewalk time over three Space Shuttle missions. He is also one of the first people to conduct a spacewalk while docked to an orbiting space station. The spacewalk was conducted during STS-76, while docked at the Russian space station Mir.
STS-76 was NASA's 76th Space Shuttle mission, and the 16th mission for Atlantis. STS-76 launched on 22 March 1996 at 3:13 am EST (UTC −5) from Kennedy Space Center launch pad 39B. STS-76 lasted over 9 days, traveled about 3,800,000 miles (6,100,000 km) while orbiting Earth an estimated 145 times, and landing at 5:28 am PST (UTC −8) on 31 March 1996 at Edwards Air Force Base runway 22.Low Earth Orbit
The National Aeronautics and Space Administration is an independent agency of the executive branch of the United States federal government responsible for the civilian space program, as well as aeronautics and aerospace research. NASA have many launch facilities but most are inactive. The most commonly used pad will be LC-39B at Kennedy Space Center in Florida.