Covers the dynamics of stellar orbits in the Milky Way, focusing on the Sun's neighborhood and the significance of Oort constants and epicyclic frequencies.
Explores the impact of COVID-19 on astronomy and the European Southern Observatory, delves into the Friedmann equations, and discusses the concept of dark energy.
Covers the analysis of gravitational lensing in galaxy clusters, focusing on the mass distribution and precision achieved in the mass model of the galaxy cluster MACSJ0416.1-2403.
