Why is the sky blue? What actually is a star? How does a rocket work? Children and young people who find the small and big questions of our universe just as exciting are invited to explore the world with us on Mouse Day - from tiny particles to huge galaxies. In experiments, workshops on various topics and a taster lecture, our young guests can get a taste of university life and try their hand at being a budding physicist.
The next Door Opener Day with the Mouse will take place on October 3, 2025.
Image: WDR
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More information
We divide our young visitors into different groups, who spend the whole day with us. Depending on age, the program will be slightly different for each group. You can find out exactly which workshops await you on October 3.
In addition to the supporting program, we offer refreshments and snacks. Please understand that due to the high number of visitors* we cannot necessarily cater to individual needs such as allergies etc. Please enquire on the day of the event whether there are any suitable options (e.g. vegan, halal, gluten-free).
Approach
The event will take place in building NB on the south side, level 03. We will signpost the way accordingly. Please note - the Electrical Engineering and Information Technology and the Civil and Environmental Engineering departments will also be opening their doors to mouse fans on the RUB campus on the same day.
Parking spaces can be found on N-Nordstraße, N-Oststraße and G-Südstraße, for example.
FAQ Mouse Day
Who is Mouse Day suitable for?
The day's program is suitable for all mouse fans between the ages of 4 and 16 (and their adult companions, of course).
How many accompanying persons can come along?
No more than two accompanying persons per child should come along. We try to offer the opportunity for accompanying persons to come along to the workshops if possible, but ask for your understanding that our young visitors always have priority.
How long is Mouse Day?
The Mouse Day starts at 10.30 am with registration, the program starts at 11 am. For the 4 to 7-year-olds, the fixed program ends around 3:30 pm, for all older children at 4 pm
How do I know that my registration worked?
You will receive a response from us to your request via the mouse page. In our reply e-mail we will ask you for more detailed information. Please note: You will not receive any further confirmation. Your children are registered.
If there are no more places available, you will also be notified.
I missed the registration deadline/all places are taken. Can I still register my children?
As places are limited, we can only accept registrations up to the maximum capacity. We will be happy to put you on our waiting list.
Contact
Cinja Bösel
Public Relations and Student Marketing
NB 02/133
Phone: +49 234 32 15382
Supporters
We would like to thank the Wilhelm and Else Heraeus Foundation for their kind support.
We would like to thank the Alfried Krupp Student Laboratory of Science of the Ruhr University Bochum for its support.
