Colloquium: Dr. Saurya Das

Fri. Oct. 2 12:30 PM - Fri. Oct. 2 01:30 PM
Location: 3M69

Dr. Saurya Das, University of Lethbridge

Our Universe: the known, unknown and some speculations

Our Universe is quite simple at scales larger than a few hundred megaparsecs: it is smooth, homogeneous, isotropic, spatially flat, and expanding at an accelerating rate, following the laws of general relativity. Yet it presents a number of unresolved problems. These include the origin and fate of our Universe, nature of its main constituents - dark matter and dark energy, and the mechanism behind its high degree of homogeneity, isotropy and flatness. I will describe success and failures of some of the theories which try to address these, and will also present some new ideas which attempt to explain the above.