This page contains a list of every single planet you are able to adventure to in Swtor. Each of the pages has a brief description of the planet and a few screenshots of what you can expect to see there. Those of you familiar with Star Wars probably don't even need to bother reading about the planets since you already know all about them. Anyone that is unfamiliar with Star Wars will probably find the information in these links quite interesting.
For those of you that would like to see the entire Star Wars galaxy map, I managed to find a picture of it on the internet. As you can see the planets currently available in Swtor just barely scratch the surface of what can be available in the future. I personally would love to see many future patches adding in new content and new planets. To see the picture better, left click it to enlarge it.