From November 6th to 12th, the "Week of the Particle World" took place throughout Germany, which was organized by the BMBF funded “Netzwerk Teilchenwelt”. The Helmholtz Institute Jena took part as a new site partner of the network with a public hybrid lecture on nuclear astrophysics and a small exhibition in the foyer of the new institute building. In addition to information about the Helmholtz Institute itself and the collaboration network “Teilchenwelt”, visitors were able to gain a small insight into the physics of X-rays and radioactive radiation using a mechanical X-ray scattering model and a cloud chamber.