The German Astronomical Society (AG) awards the 2022 Doctoral Thesis Prize to our IMPRS alumna Dr Arshia Maria Jacob. In her dissertation, Arshia Jacob addressed fundamental, long-known but still largely unanswered questions about the physics and chemistry of the interstellar medium. She collected data for various molecules and combined the results from the terahertz range with long-wave radio data. With innovative analytical methods and model calculations, her research has aided in addressing questions related to the chemical evolution of the Milky Way and the galactic distribution of the ionisation rate of cosmic rays, by extending the diagnostic properties of simple molecules. Congratulations.