Episode 95: Galaxy Clusters: The Largest Structures in the Universe, with Gil Holder

For more info on the podcast, please see our About page.

Feature Guest: Gil Holder
gilholder2Have you heard of the Great Attractor or the Great Wall? The universe evolved from a hot dense not quite perfectly uniform state to now contain galaxies in sheet-like structures separated by huge voids. These clusters and superclusters of galaxies make up the largest scale structure in the observable universe. How exactly did they emerge, what role does dark matter and dark energy play in the evolution of structure and just where is our universe headed? To help us answer those questions today we’re joined at The Star Spot by cosmologist Gil Holder.

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Current in Space

With the building of the James Webb Space Telescope coming along quickly, Anuj explains how the successor to Hubble will open a new window on the universe? And following the recent 49th anniversary of the Apollo 1 disaster, Tony reflect on three major tragedies in the history of space exploration and reflects on why it’s still worth the risk. Finally Dave reports on the groundbreaking discovery of gravitational waves via one of the most powerful phenomena in the universe: binary black hole mergers. 

About Our Guest

Gil Holder is Canada Research Chair in Cosmological Astrophysics at McGill University and a Scholar at the Canadian Institute for Advanced Research. Dr. Holder received his PhD from the University of Chicago and was a Keck Fellow at the Institute for Advanced Study from 2001 to 2004. His research focuses on unique methods of studying structure formation in the universe.

Links

Watch: The First Stars and the End of the Dark Ages (McGill University)
Gil Holder Website

How to Listen to the Show

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The Star Spot is also broadcast on The Scope at Ryerson. The show airs every Sunday at 6:00PM and Tuesday at 8:00PM Eastern Time. Listen live here

If you have interesting news and story ideas, as well as topics or potential interview guest, please send them to info@thestarspot.ca

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