in our understanding of the history of our
universe. I will summarize our current
knowledge, describe some of the puzzles
that still remain and speculate about future
developments in cosmology.
Matias Zaldarriaga has made many influential
and creative contributions to our understanding of the
early universe, particle astrophysics, and cosmology
As a probe of fundamental physics. Much of his work
centers on understanding the clues about the earliest
In this talk, Professor Matias Zaldarriaga discusses the development of the modern study of cosmology, beginning with the discovery of the expansion of the Universe by Edwin Hubble, through current efforts to map the cosmic microwave background, test ideas about the initial conditions of the Universe, and explain the accelerated expansion of the Universe.