The zine “Cosmic Waves” will be released at the Hamburg Observatory during the outreach activities of the Sternstunden Festival 2024 on July 19 & 20. This zine uses accessible language and explanations to tell the story of gravitational wave bright sirens and their role in studying our Universe. While the target audience is teenagers and young adults, anyone interested in the topic can check the online version of the zine at these links: in German and in English.