Excerpt from The Official Residents’ Guide to Moon Base Alpha, “Appendix A: Potential Health and Safety Hazards,” © 2040 by National Aeronautics and Space Administration

THE LUNAR SURFACE

While MBA is an extremely safe habitat, the lunar world outside the air locks is not. In fact, the lunar surface is exceptionally hostile to human life. Temperatures can fluctuate from -387 degrees Fahrenheit (-233 degrees Celsius) at night to 253 degrees Fahrenheit (123 degrees Celsius) in direct sunlight. In addition, there is no oxygen. For these reasons, visits to the lunar surface should be limited only to cases of extreme necessity, and no children under the age of eighteen are allowed on the surface except for 1) transits to and from the rockets on arrival and departure, and 2) emergencies in which the base must be evacuated. Should you need to exit the base for any reason, never go outside without a partner. In addition, take extreme caution when putting on your space suits, as any mistake or oversight could cause you severe injury—if not cost you your life.