My own miniature addition to this discussion: It seems strange that the kerbals know what biome you took a sample, temp-scan, etc. from ... without some kind of mapping/surveying first. It would make sense that your first rockets would be the very very weak kind, but that you should have a "camera" science part and a "radar mapping" part. You have to radar-survey and photograph the planetary body from an appropriate altitude to unlock the biomes. The biomes could be a separate tech-tree kind of thing...so having so much data about each biome captured by radar mapping and photography would unlock it. Early on you don't have electrical storage or radio antennae so you have to return the spacecraft to Kerbin and recover it. (similar to early space exploration where remote sensing was essentially a film camera in a pressurized box with a mechanism to flick the shutter) Later you can send the data back (so... exploring the Mun and Minmus and Kerbin are easy in early game...and then other bodies become more feasible). The biggest reason I came up with this idea was...not really knowing what the biomes were...how in the heck you identify them...without going outside the game to the wiki. (a big no-no IMHO) This gives a tech/science based path to "learn" about them and a reason to develop small probes instead of just making a kerbin-sized lander straight out of the gate.