Keywords: space shuttle columbia spaceshuttlecolumbia columbia sts-40 sts40 spacelab vehicle aircraft airplane outdoor The main landing gear of Space Shuttle Columbia touches on at Edwards Air Force Base in California at 11:39 EDT. The STS-40 mission was the first ever devoted solely to life sciences. Image #: s40-s-176 Date: June 14, 1991 The main landing gear of Space Shuttle Columbia touches on at Edwards Air Force Base in California at 11:39 EDT. The STS-40 mission was the first ever devoted solely to life sciences. Image #: s40-s-176 Date: June 14, 1991 |