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?
How did we discover the weak nuclear force? Why is it so strange compared to the other forces? What do mirrors have to do with all of this?
Is the universe infinite? What about the cosmological horizons, the limits to what we can see? Will we ever know for sure what’s beyond them?