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Space History Photo: Low and Wisoff at Work

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The two astronauts are conducting Detailed Test Objective procedures in the payload bay of Endeavour in June of 1993. (Image credit: NASA.)

In this historical photo from the U.S. space agency, Mission Specialist (MS) Peter J.K. Wisoff (bottom), wearing an Extravehicular Mobility Unit (EMU), works with the antenna on the European Retrievable Carrier (EURECA) while Payload Commander (PLC) G. David Low, on the Remote Manipulator System (RMS) robot arm, hovers above.

The two astronauts were conducting Detailed Test Objective (DTO) procedures in the payload bay of Endeavour. Low, also suited in an EMU, is anchored to the RMS via a Portable Foot Festraint (PFR) Manipulator Foot Restraint (MFR).

DTO results will assist in refining several procedures being developed to service the Hubble Space Telescope (HST) on mission STS-61 in December 1993. Visible in Endeavour's payload bay (PLB) are the open Spacelab (SL) tunnel adapter hatch (foreground), SPACEHAB-01 (Commercial Middeck Augmentation Module (CMAM) (foreground), and the top of the Superfluid Helium On Orbit Transfer (SHOOT) payload. The astronauts and Endeavour's vertical stabilizer and Orbital Maneuvering System (OMS) pods are backdropped against the blackness of space.

Each weekday, SPACE.com looks back at the history of spaceflight through photos (archive).

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The National Aeronautics and Space Administration (NASA) is the U.S. government agency in charge of the civilian space program as well as aeronautics and aerospace research. Founded in 1958, NASA is a civilian space agency aimed at exploring the universe with space telescopes,  satellites, robotic spacecraft, astronauts and more. The space agency has 10 major centers based across the U.S. and launches robotic and crewed missions from the Kennedy Space Center in Cape Canaveral Florida. It's astronaut corps is based at the Johnson Space Center in Houston. To follow NASA's latest mission, follow the space agency on Twitter or any other social channel, of visit: nasa.gov