I found a glitch: When I named a planet earth, and it hit one of the rock things that grow your planet, it acted as if it kept hitting them, and it grew to size "Infinity". All I saw on the screen was blue.
I think you should add a use for the treasure chests we dig past, which is treasure chests that happen to be where we dig, and they would contain a random amount of ore, the deeper it is, the higher the ore it contains