In this week's interview, Chief Correspondent Steve Scher talks with Dan Hooper about particles, relativity, and the origins of our universe. Hooper outlines our growing understanding of the conditions in which our universe began, highlighting what we know about the first few seconds after the Big Bang and how several astronomers and mathematicians throughout history helped us determine that the universe was expanding. He discusses the limitations of language in explaining mathematical equations, and the value of explaining scientific research to people who don't know much science, a practice which he says helps him better understand his work and can even lead to breakthroughs. Get an insider's look and stay in the know about what's going on in this moment at Town Hall.