CMB observations have been testing inflation at scales ranging from a few Mpc to Gpc delivering stringent limits on the amplitudes of inflationary perturbations and their scale-dependence and pointing to an effectively single field behaviour.

Relativistic hydrodynamics is an effective field theory capturing the infrared behavior of interacting QFTs near thermal equilibrium.

We are currently living an outstanding time in the field of cosmology and gravitation where more and more data are being collected constantly.

While there has been tremendous success in measuring the geometry of the Universe the question of cosmic topology remains unresolved.

We investigate cosmic censorship in anti-de Sitter space in holographic models in which the ground state is described by a good singularity.

SKAO scientific potential will revolutionize multiple fields in Astrophysics. In this seminar after introducing the role of the observatory in future Astronomy we will present its scientific potential in Gravitational Waves science.