You pass through the airlock, past the connected capsule chamber and several large terrariums, and make your way into a spacious lab unit boasting a self-contained biosphere complete with artificial weather. It's roughly circular in shape, with a ring of about a dozen sprawling plots of land with different biomes encircling a modest brick housing unit with an attached greenhouse. Cautiously, you step out onto the long stretch of moss forming a path to the center, and are pleasantly surprised that the vibrant green floor feels solid and flat with a small amount of give to it beneath your feet.