Starts With A Bang podcast

Starts With A Bang #56 - Dark Matter Substructure


Listen Later

Dark matter is often thought of as the glue that holds the Universe together. With five times as much gravity due to this unseen form of matter as compared to normal, atom-based matter, it affects how galaxies and giant large-scale structures form in a tremendous, truly epic way. But depending on what the properties of dark matter actually are, we should get a very different Universe on smaller scales.
Is dark matter cold? Warm? Hot? And does it interact with itself, or is it truly invisible? Thanks to a fascinating new technique, we're learning more about this than ever before. Take a listen as we invite Dr. Anna Nierenberg onto the podcast to talk about how gravitational lensing is revealing dark matter substructure as never before, and how it might reveal these elusive properties of dark matter at long last as a result.
(Additional information: https://www.forbes.com/sites/startswithabang/2020/01/10/eight-new-quadruple-lenses-arent-just-gorgeous-they-reveal-dark-matters-temperature/ )
(Image credit: NASA, ESA, A. NIERENBERG (JPL), AND T. TREU AND D. GILMAN (UCLA))
...more
View all episodesView all episodes
Download on the App Store

Starts With A Bang podcastBy Ethan Siegel

  • 4.7
  • 4.7
  • 4.7
  • 4.7
  • 4.7

4.7

65 ratings


More shows like Starts With A Bang podcast

View all
Big Picture Science by Big Picture Science

Big Picture Science

930 Listeners

Planetary Radio: Space Exploration, Astronomy and Science by The Planetary Society

Planetary Radio: Space Exploration, Astronomy and Science

1,328 Listeners

StarTalk Radio by Neil deGrasse Tyson

StarTalk Radio

14,142 Listeners

Universe Today Podcast by Fraser Cain

Universe Today Podcast

543 Listeners

Ask a Spaceman! by Paul M. Sutter

Ask a Spaceman!

802 Listeners

The Quanta Podcast by Quanta Magazine

The Quanta Podcast

507 Listeners

Space Nuts: Astronomy Insights & Cosmic Discoveries by Professor Fred Watson and Andrew Dunkley

Space Nuts: Astronomy Insights & Cosmic Discoveries

226 Listeners

SpaceTime: Your Guide to Space & Astronomy by Stuart Gary

SpaceTime: Your Guide to Space & Astronomy

295 Listeners

Into the Impossible With Brian Keating by Big Bang Productions Inc.

Into the Impossible With Brian Keating

1,048 Listeners

Sean Carroll's Mindscape: Science, Society, Philosophy, Culture, Arts, and Ideas by Sean Carroll | Wondery

Sean Carroll's Mindscape: Science, Society, Philosophy, Culture, Arts, and Ideas

4,128 Listeners

Daniel and Kelly’s Extraordinary Universe by iHeartPodcasts

Daniel and Kelly’s Extraordinary Universe

2,308 Listeners

The Origins Podcast with Lawrence Krauss by Lawrence M. Krauss

The Origins Podcast with Lawrence Krauss

507 Listeners

The Supermassive Podcast by The Royal Astronomical Society

The Supermassive Podcast

279 Listeners

Why This Universe? by Dan Hooper, Shalma Wegsman

Why This Universe?

362 Listeners

The Joy of Why by Steven Strogatz, Janna Levin and Quanta Magazine

The Joy of Why

496 Listeners