What really keeps the Sun shining? How long would it stay warm if fusion stopped? How long would it take before we noticed?
What are the weaknesses of inflation theory? How did the ekpyrotic theory attempt to improve it? How did it open up its own can of worms?
Why is dust so annoying? But where does it come from, and what can it do? And is dust responsible for the creation of life?
What does is mean for the universe to have a wave function? How does Hawking’s “no boundary” proposal mean that the universe comes from itself? And is it really the final answer?
What does “antimatter” actually mean? Can a particle be its own opposite? What would happen to it, and what does this have to do with a missing scientist?