
Sound of the Universe
What do pulsating neutron stars have in common with drum machines? And what would a black hole sound like, if we could hear it? These are the kinds of intriguing questions the Dresdner Sinfoniker and three renowned astronomers explore in Sound of the Universe. The evening is dedicated to the sound of the cosmos and the fascinating history of its exploration, from antiquity to the present day. While the Dresdner Sinfoniker perform live at the Planetarium Bochum, musicians from India join in via live stream. With their transcontinental concert, they bridge a distance of 6,240 km.
The performance will be streamed live via YouTube. Join us on 5 July at 8 pm CET
This extraordinary event celebrates the 100th anniversary of projection planetariums. The first one in the world began operation in 1925. Since then, millions of people have experienced projected stars and images of the cosmos in breathtaking brilliance. How the otherwise silent universe can be transformed into sound is demonstrated this evening by three astronomers from Bochum, Jaipur, and Alexandria. In Jaipur, Maharaja Jai Singh built grand observatories in the early 18th century. The Egyptian metropolis of Alexandria is home to a library that collected astonishing knowledge about the cosmos more than 2,000 years ago. The philosopher and astronomer Ptolemy once worked in Alexandria. By assuming that the round Earth stood at the center of the universe, he was able to accurately predict the positions of the planets—even though this required them to orbit on nested paths around the blue planet. Ptolemy wasn’t entirely correct, but his model shaped humanity’s worldview for the next 1,500 years. A rich foundation for a fascinating dialogue-concert that not only the audience in the Bochum Planetarium will experience live, but also listeners in India and Egypt.
The concert will be broadcast via YouTube live stream to planetariums and interested audiences around the world.
A production by the Dresdner Sinfoniker in cooperation with the Planetarium Bochum. The Dresdner Sinfoniker are supported by the Saxon State Ministry for Science, Culture and Tourism and by the City of Dresden through the Office for Culture and Monument Protection. They are co-financed by tax funds based on the budget passed by the Saxon State Parliament.

Performances
July 5, 2025 | 6:00 PM | Bochum
Planetarium Bochum
Transcontinental Concert
7:00 PM Alexandria | Bibliotheca Alexandrina
9:30 PM Jaipur | Jantar Mantar Observatory
Tickets available via the Planetarium Bochum website.
July 5, 2025 | 8:00 PM | Bochum
Planetarium Bochum
Transcontinental Concert
9:00 PM Alexandria | Bibliotheca Alexandrina
11:30 PM Jaipur | Jantar Mantar Observatory
Join us and watch the 8 pm performance streamed LIVE on YouTube.
Participants
Ensemble of the Dresdner Sinfoniker live at the Planetarium Bochum
Ensemble Manganiyar live from Jaipur (Rajasthan, India)
Astronomer Susanne Hüttemeister (Planetarium Bochum) live in conversation with Aalok Pandya in Jaipur (Rajasthan, India) and Fares Elgharaby at the Bibliotheca Alexandrina (Egypt)