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problems, NASA was rated as doing a good-to-excellent job by 63 percent of Americans. With no<br />

reference to cost, 75 percent of Americans (according to a CBS News poll) favored "the United<br />

States sending astronauts to explore Mars.' For young adults, the figure was 68 percent. I think<br />

"explore" is the operative word.<br />

It is no accident that, whatever their human flaws, and how ever moribund the human space<br />

program has be<strong>com</strong>e (a trend that the Hubble Space Telescope repair mission may have helped to<br />

reverse), astronauts and cosmonauts are still widely regarded as heroes of our species. A scientific<br />

colleague tells me about a recent trip to the New Guinea highlands where she visited a stone age<br />

culture hardly contacted by Western civilization. They were ignorant of wristwatches, soft drinks, and<br />

frozen food. But they knew about Apollo 11. They knew that humans had walked on the Moon. They<br />

knew the names of Armstrong and Aldrin and Collins. They wanted to know who was visiting the<br />

Moon these days.<br />

Projects that are future-oriented, that, despite their political difficulties, can be <strong>com</strong>pleted only in<br />

some distant decade are continuing reminders that there will be a future. Winning a foothold on other<br />

worlds whispers in our ears that we're more than Picts or Serbs or Tongans: We're humans.<br />

Exploratory spaceflight puts scientific ideas, scientific thinking, and scientific vocabulary in the<br />

public eye. It elevates the general level of intellectual inquiry. The idea that we've now understood<br />

something never grasped by anyone who ever lived before—that exhilaration, especially intense for<br />

the scientists involved, but perceptible to nearly everyone—propagates through the society, bounces<br />

off walls, and <strong>com</strong>es back at us. It encourages us to address problems in other fields that have also<br />

never before been solved. It increases the general sense of optimism in the society. It gives currency<br />

to critical thinking of the sort urgently needed if we are to solve hitherto intractable social issues. It<br />

helps stimulate a new generation of scientists. The more science in the media-especially if methods<br />

are described, as well as conclusions and implications-the healthier, I believe, the society is. People<br />

everywhere hunger to understand.<br />

WHEN I WAS A CHILD , my most exultant dreams were about flying—not in some machine, but all by<br />

myself. I would be skipping or hopping, and slowly I could pull my trajectory higher. It would take<br />

longer to fall back to the ground. Soon I would be on such a high arc that I wouldn't <strong>com</strong>e down at all.<br />

I would alight like a gargoyle in a niche near the pinnacle of a skyscraper, or gently settle down on a<br />

cloud. In the dream—which I must have had in its many variations at least a hundred times—<br />

achieving flight required a certain cast of mind. It's impossible to describe it in words, but I can<br />

remember what it was like to this day. You did something inside your head and at the pit of your<br />

stomach, and then you could lift yourself up by an effort of will alone, your limbs hanging limply. Off<br />

you'd soar.<br />

I know many people have had similar dreams. Maybe most people. Maybe everyone. Perhaps it<br />

goes back 10 million years or more, when our ancestors were gracefully flinging themselves from<br />

branch to branch in the primeval forest. A wish to soar like the birds motivated many of the pioneers<br />

of flight, including Leonardo da Vinci and the Wright brothers. Maybe that's part of the appeal of<br />

spaceflight, too.

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