This week in 1994, space shuttle Endeavour, mission STS-68, launched from NASA’s Kennedy Space Center. Endeavour carried the Space Radar Laboratory on the lab’s second flight. Flying SRL, part of NASA’s Mission to Planet Earth, during different seasons allowed comparison of environmental changes between first and second flights. Here, the SRL-2 is seen in Endeavour’s cargo bay. The NASA History Program is responsible for generating, disseminating, and preserving NASA’s remarkable history and providing a comprehensive understanding of the institutional, cultural, social, political, economic, technological, and scientific aspects of NASA’s activities in aeronautics and space. For more pictures like this one and to connect to NASA’s history, visit the Marshall History Program’s webpage. (NASA)