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Outward Bound

An Internet guide to the universe

Invisible 1

Invisibility

A device that renders objects truly invisible may be commonplace within the next few decades.

sputnik

Fellow Traveler

Fifty years ago this month, the U.S.S.R. launched Sputnik 1, the world's first Earth-orbiting artificial satellite. Shocked into action, the U.S. ramped up its space program—and its science education.

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