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?
How can matter ever go faster than light? What happens when it does? Who discovered this, and what is it good for?
What did the universe do to make so many defects? What happens when they get trapped? And could they be hiding right in front of our noses?
What makes the interstellar comet 3I/Atlas so weird? Why are we finding so many interstellar visitors recently? How are they made, and where do they come from?