How to use the whole galaxy to hear huge grav...

Daniel and Kelly dive into the history of medicine, and discuss the data John Snow collected to argue that cholera is transmitted through contaminated water and not foul-smelling air. These data bolstered the emerging germ theory of disease.See omnystudio.com/listener for privacy ...  Show more

Daniel and Kelly answer questions about tongue worms, units, and Kelly's nightmares. Link: Standard reference peanut butterSee omnystudio.com/listener for privacy information. 

In recent weeks the astrophysics community has been buzzing following the discovery that the universe appears to be filled with a background hum of gravitational waves. Using radio telescopes in the Africa, Asia, Australia, Europe and the US, several teams have noted the same thi ...  Show more

Gravity is everywhere. We and every other thing in the cosmos experience its force at all times no matter how small, no matter how oblivious you might be to its presence - it's there. But for something that causes the falling of a leaf in autumn as well as the collision of superm ...  Show more

Information about the universe is all around us. But there’s more than meets the eye! Gravitational waves are the invisible ripples in spacetime caused by supermassive interstellar activity. Join astrophysicists Ira Thorpe and Judy Racusin on an exploration of how NASA studies th ...  Show more

Get ready to explore a 10 billion year old mystery! A closely bound duo of energetic quasars, the hallmark of a pair of merging galaxies, have been discovered when the Universe was only 3 billion years old. What secrets do these quasars hold and why have they lasted so long? Join ...  Show more