When Astronomy says "Space is cool," they're not kidding! At -270°C (or 3K for you fancy folks), space is literally freezing. But when Physics shows up? That's when the real identity crisis begins!
It's the perfect metaphor for every undergrad who thought they'd be studying stars but ended up drowning in differential equations instead. The student's reaction is basically all of us when we realize astrophysics is just physics wearing a cool cosmic hat.