Sky clouded over, after presentation from Dr. Moses P. Milazzo, NASA’s first chief scientist for the Planetary Data Ecosystem (PDE), as our guest speaker. Dr. Milazzo is a planetary scientist and educator specializing in visible and near-infrared remote sensing, as well as planetary data processing. He has been an active participant on eight NASA spacecraft missions, and has contributed significantly to the development of planetary remote sensing, image processing, cartographic mapping and calibration techniques for a variety of missions and data types, including: MRO, MGS, and Odyssey (Mars); Cassini, Galileo and Voyager(Io, Europa, Ganymede, and Callisto). He also managed the USGS portion of the NASA-funded PLANETS project to develop out-of-school-time planetary science and engineering curricular materials for middle school-aged youth. Dr. Milazzo is Founder and Owner, Other Orb LLC . Dr. Milazzo received his Ph.D. in Planetary Sciences at the University of Arizona in 2005.  Questions and answers went until 8:30 pm AZ-MST with a tour of the observatory.  Moment of silence for our co-founder William "Bill" Wood who passed away on April 10, 2026.