Tomislav Terzić gave an invited talk on “Astrophysical tests of Quantum Gravity” at the Ljubljana RQI Workshop on Gravitational Quantum Physics and Metrology, held from 10th to 13th of August 2026 in Ljubljana, Slovenia. The workshop gathered researchers working on the effects of gravity on quantum systems, gravitational decoherence, and quantum metrology. It is the main annual meeting of Working Group 2 of the COST Action CA23115 Relativistic Quantum Information (RQI).