Ed Campion
Headquarters, Washington, D.C.                                        
October 23, 1991
(Phone:  202/453-1134)                                                              
Noon EDT

Barbara Schwartz
Johnson Space Center, Houston
(Phone:  713/483-5111)


RELEASE:  91-175

SEDDON NAMED PAYLOAD COMMANDER FOR SLS-2


   Dr. M. Rhea Seddon has been named Payload Commander for 
Spacelab Life Sciences-2 (SLS-2), Space Shuttle mission 
STS-58, scheduled for launch in July 1993.  The mission is 
dedicated to continued life sciences research on adaptation to 
microgravity in preparation for Space Station Freedon and 
future planetary exploration.

   Payload Commander Seddon will have overall crew 
responsibility for long-range planning and integration of 
payloads, providing expertise for the coordination of science 
activities.

   Seddon has conducted medical research during two previous 
Space Shuttle missions, STS-51D in April 1985 and STS-40 in 
June 1991.  On STS-40, the first Spacelab Life Sciences 
mission, Seddon along with fellow crew members, performed 
numerous experiments in life sciences, materials science, 
plant biology and cosmic radiation.  They also tested hardware 
proposed for the Space Station Freedom Health Maintenance 
Facility.
                           - end -