Why is infrared astronomy so hard? How do we fit giant telescopes into tiny rockets? What will the James Webb uncover?

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?
Why is it so hard to predict solar eclipses? How did Newton and Halley team up to solve it? What have we learned from solar eclipses since then?
What’s the deal with redshift? How can we actually interpret velocities when it comes to cosmic expansion?
Is light made of waves or particles? Is matter made of waves or particles? What does it mean for matter to “wave”, anyway?
What’s so bad about Venus, besides everything? How did it get so bad? How about Earth? @PaulMattSutter will answer the questions at #365DaysOfAstro