Unfortunately, the Eu-SPRI conference 2020 in Utrecht is cancelled due to the Corona virus crisis. However, we received so many interesting and thought-provoking papers for the session that we planned that we decided it would be worthwhile to convene online with interested authors and have the discussion that would have otherwise taken place in Utrecht. Therefore, we organize an online workshop on the theme of: opening up science through public engagement. (June 5th, 2020) Pubic engagement practices generally have shifted towards more democratic ‘dialogue models’ of engagement. What do public engagement practices contribute to wider societal goals, such as scientific literacy, new research perspectives and societal relevance? The speakers investigate institutional, regulatory and cultural barriers and (technological) opportunities for public engagement practices to truly benefit public values. They focus on citizen science practices (part 1), and on addressing institutional barriers (part 2). Presentation #1 Margaret Gold - The Landscape of Citizen Observatories in Europe