Postmodern culture has a moral atmosphere of zero. In a zero-morality culture, the church must pump up the atmosphere with the gravity of grace.

One of the most basic skills astronauts must learn to master is how to function in an environment of zero gravity. While it may be a thrill to find your body suddenly capable of flying and free-floating anywhere in the cabin, an absence of gravity can also increase the difficulty of completing a host of tasks.

For instance, just how do you get the toothpaste to stay on your toothbrush? Everything has to be nailed down, self-contained, and sealed tight or it will simply drift away. Such a basic item as the pen had to be redesigned so that it didn't depend on gravity to deliver ink to its tip. Astronauts have to relearn both how to practice the sp…