This Skylab-4 onboard photograph depicts Astronaut Gerald Carr testing Astronaut Maneuvering Equipment (M509) by flying it around under weightless conditions in the Orbital Workshop. The M509 experiment was an operational study to evaluate and conduct an in-orbit verification of the utility of various maneuvering techniques to assist astronauts in performing tasks that were representative of future extravehicular activity requirements.

S73-34207 (28 Aug. 1973) --- Astronaut Alan L. Bean, Skylab 3 commander, flies the M509 astronaut Maneuvering Equipment, as seen in this photographic reproduction taken from a television transmission made by a color television camera in the Orbital Workshop (OWS) of the Skylab space station in Earth orbit. Bean is strapped into the back-mounted, hand-controlled Automatically Stabilized Maneuvering Unit (ASMU). The M509 exercise was in the forward dome area of the OWS. The dome area is about 22 feet in diameter and 19 feet from top to bottom. Photo credit: NASA

S71-18399 (31 Jan. 1971) --- The huge, 363-feet tall Apollo 14 (Spacecraft 110/Lunar Module 8/Saturn 509) space vehicle is launched from Pad A, Launch Complex 39, Kennedy Space Center (KSC), Florida at 4:03:02 p.m. (EST), Jan. 31, 1971, on a lunar landing mission. This view is framed by moss-covered dead trees in the dark foreground. Aboard the Apollo 14 spacecraft were astronauts Alan B. Shepard Jr., commander; Stuart A. Roosa, command module pilot; and Edgar D. Mitchell, lunar module pilot.

SL3-107-1215 (27 Aug. 1973) --- Astronaut Alan L. Bean, Skylab 3 commander, flies the M509 Astronaut Maneuvering Equipment in the forward dome area of the Orbital Workshop (OWS) on the space station cluster in Earth orbit. One of his fellow crewmen took this photograph with a 35mm Nikon camera. Bean is strapped into the back mounted, hand-controlled Automatically Stabilized Maneuvering Unit (ASMU). The dome area is about 22 feet in diameter and 19 feet from top to bottom. Photo credit: NASA

SL3-108-1304 (July-September 1973) --- Astronaut Alan L. Bean, Skylab 3 commander, flies the M509 Astronaut Maneuvering Equipment in the forward dome area of the Orbital Workshop (OWS) on the space station cluster in Earth orbit. Bean is strapped in to the back-mounted, hand-controlled Automatically Stabilized Maneuvering Unit (ASMU). This ASMU experiment is being done in shirt sleeves. The dome area where the experiment is conducted is about 22 feet in diameter and 19 feet from top to bottom. Photo credit: NASA