Apollo 11 Lunar Module Pilot Edwin E. Aldrin Jr. deploys the Passive Seismic Experiment Package (PSE) on the Moon's surface near Tranquility Base. The sensitive instrument remained behind on the Lunar surface to radio back information concerning moonquakes, landslides and meteorite impacts. 1969-07-20 AS11-40-5951 NASA Kennedy Space Center NASA-KSC http://images.ksc.nasa.gov/ http://images.ksc.nasa.gov/photos/1969/thumb/AS11-40-5951.gif GIF 100 81 12194 http://images.ksc.nasa.gov/photos/1969/low/AS11-40-5951.gif GIF 297 240 101498 http://images.ksc.nasa.gov/photos/1969/medium/AS11-40-5951.jpg JPEG 951 768 157582 http://images.ksc.nasa.gov/photos/1969/high/AS11-40-5951.jpg JPEG 2537 2049 633557