Adept Administrator
Very rare3.4%GrindOptionalAnywhere
20+ planets with maxed out planet tracks (after all research upgrades).
In the bottom-right quadrant of the screen when you have a planet colony selected, there are the icons for upgrading Defence, Logistics, Research & Mining to whatever levels the planet can support (some can support more than others - and this depends on your Civilian research).
For this achievement, upgrade 20 separate planets so they are at the maximum level they can support for all four categories.