sts-31

STS-31 was the thirty-fifth mission of the American Space Shuttle program, which launched the Hubble Space Telescope astronomical observatory into Earth orbit. The mission used the Space Shuttle Discovery, which lifted off from Launch Pad 39B on 24 April 1990 from Kennedy Space Center, Florida.
Discovery's crew deployed the telescope on 25 April, and spent the rest of the mission tending to various scientific experiments in the shuttle's payload bay and operating a set of IMAX cameras to record the mission.

Could be an A-B Emblem version, the source usually has A-B Emblem patches. Stitching is tighter.

STS-31 was the thirty-fifth mission of the American Space Shuttle program, which launched the Hubble Space Telescope astronomical observatory into Earth orbit. The mission used the Space Shuttle Discovery, which lifted off from Launch Pad 39B on 24 April 1990 from Kennedy Space Center, Florida.
Discovery's crew deployed the telescope on 25 April, and spent the rest of the mission tending to various scientific experiments in the shuttle's payload bay and operating a set of IMAX cameras to record the mission.

This patch is one of the first shuttle patches by A-B that is not fully embroidered.

The GHRS (formerly High Resolution Spectrograph, HRS) is the dedicated instrument aboard the Hubble Space Telescope for performing high resolution spectroscopy at Ultra-Violet wavelengths.

The objective of IPMP is to investigate the physical and chemical processes that occur during the formation of polymer membranes in microgravity, such that the
improved knowledge base can be applied to commercial membrane processing techniques.

8 shuttle flights.