A (pictorial) journey into the past, present and future of the GeoFlow and AtmoFlow experiments is on the programme of the Open BTU series at the Brandenburg University of Technology Cottbus-Senftenberg on Wednesday, 19 November 2025, at 5:30 pm. The officer will be Prof. Dr.-Ing. Christoph Egbers, holder of the Chair of Aerodynamics and Fluid Mechanics.