Search for primordial black hole dark matter with X-ray satellites and prospects for future missions Ultralight primordial black holes (PBHs) in the mass range of 1016 - 1022 g are allowed by current observations to constitute a significant fraction, if not all, of the dark matter in the Universe. In...

First Results from the eROSITA All-Sky Survey: An Open Window to Precision Cosmology Clusters of galaxies trace the highest peaks in the cosmic density field and offer an independent and powerful probe of the growth of structure and cosmology. Locating clusters through well-planned multi-wavelength surveys is crucial for testing gravitational...

Neutrinos, Quantum Gravity and the Big Questions - New Ideas for New Data Neutrinos are perfect probes of quantum gravity. The particles’ weak interactions allow to preserve quantum coherence for very long timespans, and neutrino telescopes have started to collect data of neutrinos at extreme energies that have travelled extra-galactic...