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Library of Congress Catalog Card Number: 97–80863

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Cover Illustration: The large picture of the shuttle orbiter was taken from the Mir space station during shuttle mission STS-71 in July 1995. The inset is a scanning electron micrograph of a 0.6 mm diameter crater found on the Solar Maximum Mission Satellite, which was recovered from space in April 1994 by the crew of shuttle mission STS-41C. Source: NASA.

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