Long Night of Science: more than 1500 visitors at ECAP

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The Long Night of Science (25th of October 2025) was a very successful outreach event. Scientists at ECAP showed their research topics and physics phenomena to more than 1600 interested visitors. The ECAP Laboratory building was full of visitors from early afternoon to after midnight, that also had the opportunity to visit our kids programme, the HPC Village and an X-Ray setup of the Fraunhofer Institute IIS.

ECAP Laboratory illuminated for the Long Night of Science

During the afternoon programme, 400 small and bigger visitors came to the foyer of the ECAP Laboratory and performed hands-on science experiments at six different stations – from building pulsar models to inflating marshmallows in vacuum.

Foyer during the kids’ programme

For the evening programme, the large construction laboratory was opened to the public, showing exhibits from all ECAP experimental science groups: gamma- and neutrino astronomy, intensity interferometry, as well as technological transfer. Also some hands-on experiments were brought over from the kids’ programme showing that you can never be too old to have fun with science.

Construction laboratory during the Long Night of Science

One large join-in activity was the construction with briggs of the KM3NeT UHE event, illustrating the detection from the abyss of the Mediterranean Sea of a cosmic neutrino with a record-breaking energy of about 220 PeV.

The KM3NeT UHE Event Display

Thanks to all – visitors, scientists and support staff – for making this Long Night of Science such an interesting event and a big success!