Basics of Modern Cosmology - 2

This lecture covers topics such as luminosity distance, angular diameter distances, the Einstein field equation, Stephen Hawking's contributions, and the cosmological principle. It also delves into the comoving distance, null geodesics, and the Ricci curvature tensor. The presentation explores the implications of the cosmological constant, the curvature of space-time, and the FLRW metric tensor. The lecture concludes with discussions on the density parameter, the critical density, and the evolution of the universe based on its content, including matter, radiation, and dark energy.