HGSSD History of Geo- and Space Sciences Discussions HGSSD Hist. Geo Space. Sci. Discuss. 2749-117X Göttingen, Germany 10.5194/hgss-2026-5 Obituary: Bodo Reinisch (1936–2025) Bilitza Dieter ¹ 1 Department of Physics and Astronomy, George Mason University, Fairfax, VA 22030, USA 24 03 2026 2026 1 5 Copyright: © 2026 Dieter Bilitza 2026 This work is licensed under the Creative Commons Attribution 4.0 International License. To view a copy of this licence, visit https://creativecommons.org/licenses/by/4.0/ This article is available from https://hgss.copernicus.org/preprints/hgss-2026-5/ The full text article is available as a PDF file from https://hgss.copernicus.org/preprints/hgss-2026-5/hgss-2026-5.pdf