What do you see when you look up? From the roof of St. Stephen's Church, you not only have a beautiful view of the city, but also of the infinitely beautiful sky. In the audio tour by astronomer Béatrice Bonga, she takes you on a journey through space to the black hole at the centre of our galaxy. Which planets can you see from the roof? And how does a black hole work? Listen to the audio tour and you will never look at the stars in the same way again.

Black Holes and the Infinite Universe | Skywalk audio tour with astronomer Béatrice Bonga | Infinity | Science festival on and around the Stevens' Skywalk | 11 & 12 September 2025 | Radboud Reflects, Science Communication Radboud University and Donders Institute