Open days 2026: celebrating 200 years of Observatory
What goes on behind the doors of the Pôle Espace institutes in Uccle?
On 26 and 27 September, you’ll finally be able to find out. To mark the 200th anniversary of the Royal Observatory of Belgium, the other scientific institutions on the site – including the meteorological and space aeronomy departments – will also be opening their doors to the public on this special occasion.
Laboratories, instruments, experiments, observations… but above all, scientists, engineers and other staff will be on hand to introduce you to their work, their projects and their passion for science and space. A rare opportunity to ask them your questions and to see science in a different light – from the inside.
Observatory - Meteorology - Aeronomy
- September 26-27, 2026, 10h-18h (last entry slot at 17h)
- Ringlaan 3 Avenue Circulaire, 1180 Brussels
- Free entrance
Royal Observatory of Belgium (ROB)
From Earth to the stars.
Discover telescopes, historic instruments and the museum. Learn more about stars, planets, earthquakes and the Sun. Step inside the mobile planetarium and take a virtual journey through the Universe.
Royal Meteorological Institute (RMI)
Discover what happens behind the weather forecast.
How is weather measured? How is a forecast made? Explore the climatological park, meet meteorologists and discover their instruments. And don't miss the spectacular weather balloon launches. Or even an experimental short film.
Royal Belgian Institute for Space Aeronomy (BIRA-IASB)
Discover the invisible world above us.
BIRA-IASB studies the atmosphere of Earth and other worlds. Discover how scientists use instruments, satellites and space missions to investigate ozone, air quality, climate and space weather.
Solar-Terrestrial Centre of Excellence (STCE)
What happens when the Sun erupts?
Discover space weather and how solar storms can affect our environment in space. Meet space-weather forecasters, see solar telescopes in action and experience a solar storm inside an impressive inflatable dome.
B.USOC
Science in space.
How do you conduct a scientific experiment in weightlessness? Discover how B.USOC supports Belgian and European researchers in space missions and experiments aboard the International Space Station (ISS).
National Geographic Institute (NGI)
Belgium from every angle.
Find out how the IGN maps our country and how geographical data helps us to better understand and represent our territory.
Royal Academy of Overseas Sciences (ARSOM)
Science beyond borders.
Discover the research and collections of the Royal Academy of Overseas Sciences and their contribution to our understanding of overseas regions.
200 Seconds for 200 Years
Meet the people behind the science.
Scientists and engineers give short, engaging presentations about their research, discoveries and missions. Short, accessible and fascinating
Come discover, experiment, meet the scientists and be amazed!
- Programma Opendeurdagen Pool Ruimte 2026: Plan bezienswaardigheden (.pdf)
- Programme Portes Ouvertes 2026: Plan points d'intérêt (.pdf)
More activities "200 years ROB"
