Land in a crater on the moon to experience reduced gravity and experience about how habitats and testing could work on the moon. Astronauts go through training to learn how to use our science tools to measure important factors for habitation, like pressure and oxygen levels, and finish off with a VR simulation where they make observations like a scientist and ask wondrous "what if" questions about the universe! More information at http://whimc.org. Having earth in the sky as a moon requires the appropriate WHIMC texture pack.

Credit to PomChuBoi for the Space Shuttle lander model
Captain_JEK for the Moonbase construction robot