Some of it can look a bit jaggies @ 1080P.
The game is based on Cryengine 3.7 which has Morphological AA, 5 different modes.
Morphological Anti-aliasing 1X, 1TX, 2X, 2TX and 4TX.
Go to (\Cloud Imperium Games\StarCitizen\Public) and make a User.cfg file in that directory
In the User.cfg type ( r_AntialiasingMode = # ) the # is the number from the list above that you want to use, so for example ( r_AntialiasingMode = 3 ) is Morphological Anti-aliasing 2X
It may no longer work given that CiG made a lot of modifications to the Engine, its worth a try, i would look at it for you but i have a lot of my own modifications that i would have to undo to see if its working, nope!
If not there are alternatives, you could use DSR or AMD's equivalent resolution up scaling which does reduce jaggies, if you upscale from 1080P to 1440P it does make a difference even if you are on a 1080P screen.
Or, both AMD and nVidia have post processing AA options you could apply in the drivers, again this is something that may or may not work, i know AMD's driver based post processing AA options do work in Cryengine but again Star Citizen is built on a modified engine.
Other options are SweetFX and the like....