## Modern Cosmology and the Origin of the Universe

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