AaS! 175: Should We Be Afraid of the Dipole Repeller?

What is the cosmological constant? How is the expansion of the universe related to quantum fields? How does a vacuum energy produce accelerated expansion? I discuss these questions and more in today's...

17 Juli 201843min

What is a quantum state? How can two particles share the same state? What is entanglement, and does it really allow for faster-than-light communication? I discuss these questions and more in today's A...

3 Juli 201832min

Were the dark ages really dark? What is a perturbation, and how did they grow in the early universe? When the first stars awoke, what happened? I discuss these questions and more in today's Ask a Spac...

19 Juni 201835min

What does momentum have to do with rockets? Why are nozzles so dang important? What is a "potent mixture", anyway? I discuss these questions and more in today's Ask a Spaceman! Support the show: http:...

5 Juni 201831min

What is the so-called "OMG Particle"? Where could it possibly come from, and how are magnetic fields involved? How can we detect these cosmic rays? I discuss these questions and more in today's Ask a ...

15 Maj 201838min

Part 3! How did Einstein develop General Relativity? What does it mean for different kinds of masses to be equivalent? How does gravity do what it does? Why is curvature so important in understanding ...

1 Maj 201842min

Part 2! How did Einstein develop General Relativity? What does it mean for different kinds of masses to be equivalent? How does gravity do what it does? Why is curvature so important in understanding ...

17 Apr 201834min

Part 1! How did Einstein develop General Relativity? What does it mean for different kinds of masses to be equivalent? How does gravity do what it does? Why is curvature so important in understanding ...

3 Apr 201838min