Barry Geldzahler received BA and BS degrees in Astronomy and Mathematics from the University of Illinois, and a PhD in Astronomy and Astrophysics officially from the University of Pennsylvania – unofficially from the National Radio Astronomy Observatory with about 2 years spent at the Max Planck Institute for Radio Astronomy. This was followed by post-doctoral positions at MIT and Naval Research Lab. His specialty is radio astronomy, specifically connected link and very long baseline interferometry, and phased arrays. During his career in astronomy, Dr. Geldzahler has published papers in optical, radio, x-ray, UV, and gamma ray astrophysics. Dr. Geldzahler has worked in industry for 15 years on a variety of spacecraft missions including Clementine, and at Applied Physics Lab on MSX, and NEAR (Near Earth Asteroid Rendezvous). He has been at NASA since 2001 where he has been the program executive for NEAR, Galileo (Jupiter orbiter), Stardust (comet flyby), the Planetary Data System, the Deep Space Network, and the Near Earth Network. Dr. Geldzahler is currently NASA’s Chief Scientist (since 2009) and Chief Technologist (since 2014) for Space Communication and Navigation. He is the Program Director for the operation and utilization of the phased array project Ka Band Objects: Observation and Monitoring (KaBOOM) and the development of the Celestial, Atmospheric, and NEO Interferometry System (CANIS). Dr. Geldzahler is also the Program Executive for NASA’s quantum communication and network endeavors. In addition, he continues to provide strategic guidance and direction for a variety of scientific and navigation studies to enable future human space flight beyond low Earth orbit. He is well recognized as a subject matter expert within NASA and other agencies in the areas of various forms of interferometry and phased arrays. Dr. Geldzahler is also an award winning songwriter.