One of the most contested issues in astrophysics is our understanding of the Universe's expansion. Adam Riess discusses why there is disagreement and what might resolve it.
Oct 15
How Do Fungi Keep the Planet Healthy?
People may think of soil as just dirt, but it is anything but inert. Beneath your feet, a vast network of mycorrhizal fungi is hard at work, trading minerals with plant roots. This trading system helps enrich the soil, and it sequesters 13 billion tons of atmospheric carbon dioxi ... Show More
56m 52s
Oct 1
What Does the Fourth Dimension Actually Look Like?
We know all about how things exist in the three dimensions of length, width, and height. Physicists often talk about time as a fourth dimension, but what if there were a fourth spatial dimension — another direction entirely? How on earth would we picture that? Mathematicians use ... Show More
53m 20s
Jul 2021
How Do Scientists LISTEN to Black Holes?
Did you know that you can HEAR Black Holes colliding out in space? It's true! Scientists have discovered that by listening to gravitational waves, they can actually hear a black hole, billions of miles away, colliding with another one. Don't miss this awesome chat with Dr. Eric T ... Show More
32m 15s
Jul 2022
Cosmic Queries – Intergalactic Impacts
<p>What happens when three black holes collide? On this episode, Neil deGrasse Tyson and comic co-host Chuck Nice explore even more cosmic collisions in space, in the quantum realm, and more!</p><p>NOTE: StarTalk+ Patrons can watch or listen to this entire episode commercial-free ... Show More
44m 49s