STS-59 was a space shuttle mission that was launched on April 9, 1994. The mission was flown by the space shuttle Endeavour and was the 59th mission in the Space Transportation System (STS) program. The primary objectives of the mission were to deploy the Space Radar Laboratory (SRL) payload, which was used to study the Earth’s surface and atmosphere, and to perform various scientific experiments in the Spacelab module. The mission patch for STS-59 features the space shuttle Endeavour, which is surrounded by a blue circle representing the Earth. The patch also features the words “STS-59” and “Endeavour,” as well as the mission’s primary payload, the SRL. The patch also includes the insignias of NASA and the Spacelab program.