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?
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?
What does momentum have to do with rockets? Why are nozzles so dang important? What is a “potent mixture”, anyway?
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?
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 gravity?