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

Daniel and Kelly explain the bizarre Tychonic model of the solar system, which for centuries stood as a valid theory alongside the Copernican model.See omnystudio.com/listener for privacy information. 

Daniel and Kelly answer questions about relativistic paradoxes, parasitoid wasp viruses, and detector technologies.See omnystudio.com/listener for privacy information. 

What the new discovery of gravitational wave imprints in pulsar signals can reveal about the cosmos 

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 ...  Afficher plus

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 ...  Afficher plus

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 ...  Afficher plus