The problem is that this would likely move players from finding the planets' information in game to looking it up on a wiki or asking on here/reddit/discord if they really wanted to know beforehand. And if you're a more experienced player going through the same routine of having to find that information again to use it in a given save would be annoying (if they need something specific since nobody remembers Pol's exact gravity). For things like biome and resource maps I can understand having some discoverability to them, but not necessarily the surface-level characteristics.
