Gardner was selected as an astronaut candidate by NASA in January 1978, reporting to the
Johnson Space Center in July 1978. In August 1979 he completed a one-year training and evaluation period, making him eligible for assignment as a Mission Specialist Astronaut. He subsequently served as the Astronaut Project Manager for the flight software in the Space Shuttle onboard computers leading up to the
first flight in April 1981. He then served as a Support Crew Astronaut for the fourth flight (
STS-4). He flew as a mission specialist on
STS-8 (August 30 to September 5, 1983) and
STS-51-A (November 8–16, 1984). Gardner logged a total of 337 hours in space and 225 orbits of the
Earth on these two flights. He logged more than 2,300 hours flying time in over 20 different types of aircraft and spacecraft. Prior to the
Challenger accident, Gardner was chosen to be a member of the first Shuttle
mission to launch from
Vandenberg Air Force Base,
California. That flight and the Vandenberg launch capability itself were canceled after the accident. In October 1986, following 8½ years with NASA, Gardner returned to his
Navy duties and was assigned to the
U.S. Space Command,
Colorado Springs, Colorado. He served over two years as the Deputy Chief, Space Control Operations Division in
Cheyenne Mountain Air Force Station and, after promotion to the rank of
captain in June 1989, became the Command's Deputy Director for Space Control at
Peterson Air Force Base. His space control responsibilities included the surveillance and tracking of all man-made objects in Earth orbit and the protection of U.S. and allied space systems. Gardner retired from the U.S. Navy in October 1990 and accepted a position with
TRW Inc. in Colorado Springs, being placed as a program manager in the Colorado Springs Engineering Operations of TRW's Space and Defense Sector. In that capacity, he was involved in the development of both civilian and military space and defense high technology programs. After TRW, he became the manager of
Northrop Grumman's operations in Colorado Springs. Gardner became the Associate Director for Renewable Fuels Science and Technology at the
National Renewable Energy Laboratory in 2003, and retired in January 2013.
Space flight experience STS-8 launched from the
Kennedy Space Center,
Florida on August 30, 1983. The crew aboard
Space Shuttle Challenger included
Richard Truly (Spacecraft Commander),
Daniel Brandenstein (Pilot), and fellow Mission Specialists
Guion Bluford and
William Thornton. This was the third flight of the Orbiter
Challenger and the first night launch and landing mission of the Shuttle program. During the flight, the crew of STS-8 deployed the Indian National Satellite (
INSAT-1B), operated and tested the Canadian-built
Remote Manipulator System (RMS) robot arm, and performed numerous earth resources and space science experiments. STS-8 completed 98 Earth orbits in 145 hours before landing at
Edwards Air Force Base, California on September 5, 1983.
STS-51-A, the fourteenth flight of the Shuttle program, launched on November 8, 1984 (his birthday). The crew aboard
Space Shuttle Discovery included
Frederick Hauck (Spacecraft Commander),
David Walker (Pilot), and fellow Mission Specialists
Joseph Allen and
Anna Fisher. This was the second flight of
Discovery. During this mission the crew deployed two satellites, Canada's
Anik D-2 (TELESAT-H) and the Hughes' LEASAT-1 (
Syncom IV-1), now in service with the U.S. Navy. In an unprecedented salvage effort, they rendezvoused with and returned from space two satellites previously launched into improper orbits, the Indonesian
Palapa B-2 and the Western Union
Westar VI communication satellites. Gardner and Allen used the
Manned Maneuvering Unit (MMU) backpack to travel through space, completely untethered from the shuttle, for a total of 12 hours flight time. It was the first and only untethered spacewalk for returning malfunctioning satellites from orbit. The feat is exceptional: the MMU has been retired, modern astronauts rely on tethered spacewalks, and safer robotic solutions are already being developed. == Organizations ==