How did chemists save astronomy? What’s so important about the spectrum, and how are they made? How can we tell what things in space are made out of?
Why is infrared astronomy so hard? How do we fit giant telescopes into tiny rockets? What will the James Webb uncover?
Where does the quantum world begin? Why do we have a hard time fundamentally understanding quantum systems? What connects quantum and classical physics?
What’s it like to fall into a black hole (again)? What does the outside universe look like? Is there any way to avoid your grisly fate at the singularity?
What is chaos theory? How can something be both deterministic and unpredictable? Is there are hope at all for physics?