What is the relationship between a galaxy, universe, and solar system?

Well, darling, here's the cosmic breakdown for you: a galaxy is a vast collection of stars, dust, and gas, our Milky Way being a typical example. The universe, on the other hand, is everything - all galaxies, stars, planets, and everything in between. And a solar system? Well, that's just one tiny little set-up within a galaxy - like our own system with the Sun, Earth, and other celestial revolving around it. Hope that clears things up for you!