As I have come to explore the insane size galaxy I find it somewhat difficult to remember where really nice planets I've discovered are located. I wanted to suggest a way to help negate this issue. Once a planet, resource, or other asset is discovered allow the option to place a colored pin on it as a (point of interest). They would show up on the mini map as well as over the planet in plain view. You could have different colors for different assets. Example: Blue pin for planets you want to colonize. Gold pins for resources you need. Red pins for relics. Once you have placed a few of these you could look at the mini map and see where future projects lie. This would help you better plan your expansion and help you remember where some of the nice stuff you found is.