What is the Hubble Tension?

What is the Hubble Tension?

From The Supermassive Podcast by The Royal Astronomical Society

February 26, 2026 · 1h 5m

About this episode

This episode explores the Hubble Tension and its implications in cosmology with insights from expert guests.

There's a crisis in cosmology when it comes to understanding a little thing like the acceleration of our universe, aka The Hubble Tension. And in this episode, Izzie Clarke and Dr Becky Smethurst are digging into what this is and (trying to) explain the science behind it. A huge thank you to our guests, (Nobel Prize winning-) Professor Adam Riess from John Hopkins University and Professor Silvia Galli from Institut d'Astrophysique de Paris. Join  The Supermassive Club  for ad-free listening, forum access, and extra content from the team. And email your questions to  podcast@ras.ac.uk  or follow us on Instagram, @SupermassivePod. The Supermassive Podcast is a Boffin Media production. The producers are Izzie Clarke and Richard Hollingham. Hosted on Acast. See acast.com/privacy for more information.

People in this episode

Hosts: Izzie Clarke, Dr Becky Smethurst

Guests: Professor Adam Riess, Professor Silvia Galli

Topics covered

  • Hubble Tension
  • cosmology
  • universe acceleration
  • science explanation
  • guest insights

Keywords

  • Hubble Tension
  • cosmology
  • universe
  • acceleration
  • Professor Adam Riess
  • Professor Silvia Galli
  • science
  • astronomy

Mentioned in this episode

Organizations: John Hopkins University, Institut d'Astrophysique de Paris, The Supermassive Podcast, Boffin Media, Acast, Royal Astronomical Society

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