The bottom line is that space is a frustrating, ungiving environment, and you are trapped in it. If you're trapped long enough, your frustration metastasizes to anger. Anger wants an outlet and a victim. An astronaut has three from which to choose: a crewmate, Mission Control, and himself. Astronauts try not to vent at each other because it makes a bad situation worse. There's no front door to slam or driveway to speed out of. You're soaking in it. "Also," says Jim Lovell, who spent two weeks on a loveseat with Frank Borman during Gemini VII, "you're in a risky business and you depend on the other guy to stay alive. So you don't antagonize the other guy."
from Packing for Mars: The Curious Science of Live in the Void, by Mary Roach
Space travel and the preparations people go through in order to get into space are always interesting. In a way, the Gemini program was the last great moment of midcentury American culture. And certainly there are still people willing to take the risks needed for space travel.
One wonders, though, how far this thing can be taken. As a species we evolved for the conditions prevalent on Earth. Some have taken a step or two off the planet. But colonization is a whole other basket of fish. Does anyone really want to live in the void? In theory, there are plans to settle Mars and then move on from there. This would require long periods, maybe lifetimes, of voyagers denying their human side. In practice we're not really exploring space as much as we're throwing our toys into it.
