So I start a new game and the gravity well, grid and slipspace lanes no longer appear. I have toggled cinematic on/off and even deleted the game and re-installed it. Still, doesn't fix it. I am not really sure what caused it since it just appeared (Well, disappeared) out of the blue.

@SmokeTinyTom By any chance, did you take a look at your user interface settings in game? Sometimes sins will just randomly reset the settings for what elements are visible in regular/cinematic mode.