In 2025, the European Space Agency once again opened its doors for the ESA Open Days, welcoming thousands of visitors from across Europe into the world of ESA’s space missions. From Germany to France, Italy to Spain, and the Netherlands, some of our sites became vibrant centres of discovery and inspiration where attendees had the chance to explore hands-on laboratories and exhibitions, take part to insightful presentations and meet the scientists and astronauts behind our missions. The 2025 Open Days united five ESA establishments, bringing together a Europe-wide community of nearly 2000 volunteers, science communicators, and ESA experts who guided visitors on a journey through the cosmos. More than 80 speakers shared their experiences and insights on stage, while about 22 000 guests took part in interactive workshops, behind-the-scenes tours, and creative activities.

As we celebrate ESA’s 50th anniversary, the 2025 ESA Open Days were more than just showcases of cutting-edge technology and science. They highlighted our contribution to Europe’s prosperity, technological leadership, and commitment to inspiring the next generation, all driven by one clear goal: to elevate Europe’s future through the power of space.

Below is a look at the highlights from ESA Open Days 2025 at our establishments.