I've been tinkering in the game all day. Enjoying it in this early stage and will be happy to see how it progresses. If I may make a suggestion? An option for 10x and 100x investments as it can turn into a real clickfest later in the game once you have a steady income of taxes coming in from all your colonies. Had to turn the volume down as the ding was irritating everyone.
Those galaxies, jeez, you're not wrong about being large. Don't think I've populated more than 1% of the systems yet. It's a very long term game if you aim to rule the galaxy (and who doesn't?)