The #19 event of AoT Bonn live on YouTube on 26 May at 19:00 CEST featuring Prof Dr Uli Klein, The Physics Show Musical from the University of Bonn, and Dr Alan Roy. For more information, you can follow us on facebook & youtube (Astronomy on Tap Bonn) and Instagram & Twitter (@aotbonn), or drop us an email at AoTBonn@gmail.com.