Emblem of Nasa's STS-53 mission
Designed by the crewmembers, the STS-53 insignia shows the Space Shuttle Discovery rising to new achievements as it trails the symbol of the Astronaut Office against a backdrop of the American flag. The five stars and three stripes also serve to symbolize the mission designation (STS-53) and America's continuing commitment to world leadership in space. The pentagonal shape of the patch represents the Department of Defense (DOD) and its support of the Space Shuttle Program. The band delineating the flag from space includes the four colors of the military services of the crewmembers. The names of the flight crewmembers are located along the border of the patch. They are Commander  David M. Walker, Pilot Robert D. Cabana, Mission Specialist (MS) Guion S.  Bluford, MS James S. Voss, and MS Michael R. U. Clifford. Each crewmember contributed to the design of the insignia.
https://mix.msfc.nasa.gov/abstracts.php?p=3533
NASA, this vectorization was made by Mysid in Inkscape.