A thunderstorm on Aug. 29, 1990 sent multiple lightning bolts onto the historic test stand used for NASA's Saturn V, Space Shuttle, and current propulsion systems development. It was constructed in the 1960s to develop and test the first stage of the Saturn V rocket, which consisted of five F-1 engines. The B test stand contains 12 million pounds of concrete in its base legs and was modified in 1974 to allow testing of Space Shuttle external tanks. The stand was modified again to accommodate a new technology test-bed engine and is currently being used to test engines for Space Launch System. You've seen a lot of those lately -- getting closer to launch every day! Credit: NASA #nasa #tbt #lightning #stennis #mississippi #rocketscience nasastennis nasa