What can 5% of the universe tell us about the 95%?

Speaker: Sean McLaughlin

Time: 5:15 July 19 2017

Location: Kavli Auditorium

Abstract

It is well known that a majority of the universe's contents are comprised of so-called 'dark' substances. 95% of the universe is made of dark matter and dark energy, two poorly understood phenomena that cannot be directly observed. How then, do cosmologists study them? I will explain how astronomers use large scale surveys and novel statistical techniques to infer properties of the dark universe from how it influences the matter we can see.