In this lecture, the professor first reviewed supernovae Ia and vacuum energy density, then talked about problems of the conventional (non-inflationary) hot big bang model.

In this lecture, the professor discussed the mechanism of inflation, original inflationary model, and new inflationary scenario.

In this lecture, the professor first talked about supernovae type Ia; summarized the age of the universe and radiation flux versus redshift; and talked about vacuum energy density.

In this lecture, Professor Hughes reviewed symmetries of gauge theories in standard model, the Higgs field and the cosmological magnetic monopole problem.

In this lecture, the professor continued to talk about the black-body radiation, then talked about cosmic microwave background spectrum and the cosmological constant.

In this lecture, the professor reviewed relativistic energy, relativistic four-momentum, the mass of radiation, radiation in an expanding universe, modification of the Friedmann equations; black-body radiation and the early history of the universe.

In this lecture, the professor reviewed open universe metric; discussed the differences between open universe and closed universe; and talked about spacetime metric.

In this lecture, the professor reviewed gravitational effect of pressure and talked about age of universe and the cosmological constant, etc.

In this lecture, the professor reviewed a closed three-dimensional space and implications of general relativity; and talked about open universe and the spacetime metric.

In this lecture, the professor reviewed dynamics of a flat radiation-dominated universe and continued to talk about black-body radiation and the early history of the universe.

In this lecture, the professor reviewed the spacetime geodesic equation; talked about the Schwarzschild metric and radial geodesics; and solved the radial infall equation.

In this lecture, the professor reviewed Robertson-Walker metric and talked about geodesic equation.

In this lecture, the professor reviewed the dynamics of homogeneous expansion and introduced non-Euclidean spaces.

In this lecture, the professor reviewed Euclid's Postulates and talked about non-Euclidean geometry and a sphere in 4 Euclidean dimensions.

In this lecture, the professor continued to talk about the dynamics of homogeneous expansion; summarized age of a flat matter-dominated universe, Big Bang singularity, and evolution of a closed universe.

In this lecture, the professor continued to talk about the dynamics of homogeneous expansion; summarized mathematical model and conservation law.

In this lecture, the professor continued to talk about the dynamics of homogeneous expansion; summarized mathematical model and equations, conventions, types of solutions and evolution of a flat universe.

In this lecture, the professor discussed the doppler effect, time dilation, Lorentz-Fitzgerald contraction and relativity of simultaneity.

In this lecture, the professor quickly reviewed the homogeneous expanding universe, then discussed cosmological redshift and the dynamics of homogeneous expansion.

In this lecture, the professor talked about cosmological redshift and the dynamics of homogeneous expansion.

In this lecture, the professor first talked about the properties of the universe, then discussed Hubble's Law, gave an example of isotropy without homogeneity, etc.

In this lecture, the professor summarized the standard Big Bang, cosmic inflation, evidence for inflation, inflation and multiverse, nightmare of dark energy. He also talked about the landscape and environmental selection, anthropic arguments, etc.

In this lecture, the professor talked about the standard Big Bang, cosmic inflation, evidence for inflation, Cosmic Microwave Background (CMB), universe to multiverse, dark energy, etc.