STS-57 Endeavour launched from the Kennedy Space Center, Florida, on June 21, 1993. The primary mission of this flight was the retrieval of the European Retrievable Carrier satellite (EURECA). Additionally, STS-57 featured the first flight of the Spacehab, a commercially provided middeck augmentation module for the conduct of microgravity experiments. Spacehab carried 22 individual flight experiments in materials processing and human factors. A spacewalk was conducted on this flight as part of an ongoing program to evaluate extravehicular activity (EVA) techniques for future missions. The Space Shuttle Endeavour landed at the Kennedy Space Center on July 1, 1993, after 10 days on orbit. Mission duration was 239 hours, 45 minutes.