Home Van Allen Observatory Van Allen Observatory Welcome to the Van Allen Observatory website. The University of Iowa Department of Physics and Astronomy maintains these pages as a guide to the Van Allen Observatory (VAO) located on the roof of Van Allen Hall in downtown Iowa City. Events Plasma Physics Seminar - Alberto Felix; Department of Physics & Astronomy, University of Iowa Monday, October 20, 2025 3:30pm to 4:20pm Van Allen Hall Plasma Physics Seminar Nuclear & Particle Physics Seminar - Zheyue Hang; Department of Physics & Astronomy, University of Iowa Monday, October 20, 2025 3:30pm to 4:20pm Van Allen Hall Nuclear & Particle Physics Seminar Astrophysics & Space Physics Seminar - Ketan Rikame, Ph.D.; Raman Research Institute Monday, October 20, 2025 3:30pm to 4:30pm Van Allen Hall Flares and Burts During Eclipses of X-ray Binary Systems, and Initial Results from the Indian X-ray Polarimeter