How Many Leaves Are on a Tree? Kirk Johnson
Apr 29, 2026 - 01:34
Radio and PodcastLive Radio & Podcasts
Science & Medicine
Space-Time Expansion, Explained Adam Riess
If the universe is expanding, why aren’t galaxies stretching apart? Cosmologist Adam Riess breaks down the physics behind cosmic expansion, the forces that resist it, and why dark energy dominates the vast spaces between...
About This Episode
Space-Time Expansion, Explained Adam Riess is an episode from NOVA Now by GBH. If the universe is expanding, why aren’t galaxies stretching apart? Cosmologist Adam Riess breaks down the physics behind cosmic expansion, the forces that resis...
Podcast
This episode belongs to NOVA Now.
Listen Online
Use the player on this page to stream the episode online.
Episode Details
Published Mar 4, 2026, 01:41 long, audio available.
Related Episodes
Continue listening to more episodes from NOVA Now.
Decoding the Great Pyramid
Apr 28, 2026 - 21:48
The Air You Breathe Is Bacteria Poop Peter Girguis
Apr 22, 2026 - 01:23
The Fish That Could Walk Sean B. Carrol
Apr 15, 2026 - 01:34
When Whales Could Walk
Apr 14, 2026 - 18:28
How Close Can You Safely Get to a Black Hole? Janna Levin
Apr 8, 2026 - 01:49
A New Law of Nature? Robert Hazen & Michael Wong
Apr 1, 2026 - 02:33
Arctic Sinkholes
Mar 31, 2026 - 16:37
Questions About This Episode
What is Space-Time Expansion, Explained Adam Riess about?
If the universe is expanding, why aren’t galaxies stretching apart? Cosmologist Adam Riess breaks down the physics behind cosmic expansion, the forces that resist it, and why dark energy dominates the vast spaces between. For more, check out the extended interview with Adam Riess. Learn more about NOVA and
Where can I listen to Space-Time Expansion, Explained Adam Riess?
You can listen to Space-Time Expansion, Explained Adam Riess online on Radio and Podcast. Open the player on this page to stream the available audio.
Which podcast is Space-Time Expansion, Explained Adam Riess from?
Space-Time Expansion, Explained Adam Riess is an episode from NOVA Now by GBH.
How long is this episode?
This episode is 01:41 long.
When was this episode published?
This episode was published on Mar 4, 2026.
Can I save Space-Time Expansion, Explained Adam Riess for later?
Yes. Use the heart button on the episode page to add it to your favorite episodes list.
Are there related episodes from NOVA Now?
Yes. This page shows related episodes from NOVA Now when more episodes are available from the podcast feed.
Quick Answers About This Episode
Where can I listen to Space-Time Expansion, Explained Adam Riess?
You can listen to Space-Time Expansion, Explained Adam Riess on this page when the episode audio is available from the podcast feed.
Which podcast is this episode from?
Space-Time Expansion, Explained Adam Riess is from NOVA Now by GBH.
What are the episode details?
Published Mar 4, 2026 and 01:41 long