Time to have a little fun and take a look at a cool scifi website. The site is called Atomic Rockets. It looks at some of the issues in designing a spaceship for that science fiction novel you keep meaning to write. The goal is to try to minimize the amount of handwavium you have to add to get your rocket to work.
In addition to covering basic physics issues, Atomic Rockets looks into what kind of weapons and tactics you will need to defeat your arch villain. Your rocket engine is the biggest gun you have! The site also looks at galactic politics. If you want to build that galactic empire, how are you going to control it?
While the technical information is great, what makes this site really stand out is the fantastic artwork included from the golden age of science fiction. Lots of great artwork is included from the covers of several science fiction magazines and books. I probably spend just as much time zooming up the images with my Image Zoom extension to enjoy them as I spend reading the site.
The site is always being updated so be sure to visit it every few months to see what has been added.