Packing for Mars: The Curious Science of Life in the Void

by Mary Roach

Space exploration is in some ways an exploration of what it means to be human. How much normalcy can people forgo? For how long, and what does it do to them?

Space doesn’t just encompass the sublime and the ridiculous. It erases the line between.

Psychologists use the term “irrational antagonism” to describe what happens between people isolated together for more than about six weeks.

Gravity is why there are suns and planets in the first place. It is practically God. In the beginning, the cosmos was nothing but empty space and vast clouds of gases. Eventually the gases cooled to the point where tiny grains coalesced. These grains would have spent eternity moving through space, ignoring each other, had gravitational attraction not brought them together. Gravitation is the lust of the cosmos.

There is no such thing as a real weight, only real mass. Weight is determined by gravity.

“Apollo 8 has 5,600,000 parts…. Even if all functioned with 99.9 percent reliability, we could expect 5,600 defects.”

“Personal hygiene as practiced in the U.S. today is largely a cultural fetish, actively promoted by those with commercial interests.”

Astronauts are as much as 2.5 inches taller after about a week in space. (The typical gain is 3 percent of one’s height.) Like children, they will “outgrow” their suits if a “growth” spurt has not been factored in.

Upon the occasion of history’s first manned flights—in the 1780s, aboard the Montgolfier brothers’ hot-air balloons—someone asked Franklin what use he saw in such frivolity. “What use,” he replied, “is a newborn baby?”

The nobility of the human spirit grows harder for me to believe in. War, zealotry, greed, malls, narcissism. I see a backhanded nobility in excessive, impractical outlays of cash prompted by nothing loftier than a species joining hands and saying “I bet we can do this.” Yes, the money could be better spent on Earth. But would it? Since when has money saved by government red-lining been spent on education and cancer research? It is always squandered. Let’s squander some on Mars. Let’s go out and play.

If it’s cordless, fireproof, lightweight and strong, miniaturized, or automated, chances are good NASA has had a hand in the technology. We are talking trash compactors, bulletproof vests, high-speed wireless data transfer, implantable heart monitors, cordless power tools, artificial limbs, dustbusters, sports bras, solar panels, invisible braces, computerized insulin pumps, fire-fighters’ masks. Every now and then, earthbound applications head off in an unexpected direction: Digital lunar image analyzers allow Estée Lauder to quantify “subtleties otherwise undetectable” in the skin of women using their products, providing a basis for ludicrous wrinkle-erasing claims.