Recent molecular line observations with ALMA in several nearby Seyferts have revealed the existence of molecular tori,

I will briefly discuss how the first image of a black hole was obtained by

Clusters of galaxies are key structures for our understanding of galaxy evolution physics in denser

Evidence from different cosmological probes have lead to the establishment of the dark matter and

I present the results of a survey of the kinematics of a large sample of

The Andromeda Galaxy (M31), our nearest large galactic neighbour, offers a unique opportunity to test how

Active Galactic Nuclei (AGN) are powered by accretion onto supermassive black holes and, besides being