STS-32 was the 33rd mission of NASA's Space Shuttle program, and the 9th launch of Space Shuttle Columbia. Launched on 9 January 1990, it marked the first use of Launch Pad A at Kennedy Space Center's Complex 39 since 1986; it also marked the first use of Mobile Launcher Platform No. 3 (MLP-3) in the Space Shuttle program. STS-32 was, at the time, the longest shuttle mission yet conducted, with a duration of nearly 11 days. Before STS-32, the only mission of the same duration had been STS-9 in 1983. On 20 January 1990, STS-32 executed the third night landing of the shuttle program.
The caduceus on the left represents the medical experiments, and the crystalline structure on the right represents the materials science.
Curiously, the A-B Emblem version of this patch lacks the caduceus and crystalline structure stitching on the radial border.