Well just any good game related to space I am asking for, since it is already a small area, adding 4X and such to the specifics lowers the number of games even more.
Well if you really wanna have some fun and a little bit of amazement with the large world of the galaxy, try a mod that has been in active development since like 2003, or something like that, for freelancer called crossfire, but i do recommend you open the options files and lower the difficulty significantly for your first go, crossfire adds a whole new element of FUCK THIS GAME rage quitting, but the story and the general open worldyness is worth the play. It is absolutely amazing watching space move around you and such, hard to explain unless you have played it and seen it for yourself.
Hmmm, Id recommend trying sins of solar empire, maybe a little bit of galciv2(though spore so outdoes this game in every aspect)
ASCII sector is AMAZING if you got the the patience to handle it, Seeing as you play cataclysm that shouldn't be an issue.
X3 was alright, There are a few other 4x id recommend but meh as i said going to wikipedia or anywhere on google and simply typing "4x space games" would provide you 100x as much info and than i ever could.