What is the weak equivalency principle? How was antimatter discovered and why is it the perfect thing to put gravity to the test? What did the CERN experiment discover?
How does the double-slit experiment work? What does it teach us about reality and measurement if we try to mess with the experiment after it’s already started? How does quantum complementarity guide us with how to think about it?
What is causal determinism? What are some of the ways that physics can permit free will? What does emergence have to do with all of this?
What do extra dimensions have to do with the strength of gravity? What is a tower of gravitons? How can we detect extra dimensions even if we can’t perceive them?
What happens to a white dwarf when it cools off? How long does it take? Do they just stay black forever, or will something more interesting happen to them someday?