Although I've been a fan of mainly Star Wars since I was young, I've also picked up on bits of other Sci-fi knowledge, too. I think science fiction is fascinating in the sense that it's like a conceptual nursery for the future possibilities of humanity.
Searching through "Google Images" as I sometimes do, I came across these great charts. The first one is a comparison of everything from (comparatively tiny) earth-bound vessels from history to Darth Vader's mile-long intersellar craft, the Executor-class Star Destroyer.
The second chart is a map of all the planets in the Star Wars galaxy.
"The galaxy is filled with over 400 billion stars, around which circle over a million inhabitable planets that are home to over 20 million intelligent species."
*I also found this website that takes it to yet another level, including everything from the scale of humans & Ewoks to the Death Star to structures like the "Dyson Sphere" that encompass an entire solar system!
One thing that nobody has thought of yet is the "Monkeybuddhasphere™" which is a spaceship, the size of the entire Universe. The control system for this complex vehicle is already in operation- your own brain!
click to enlarge