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a banner hangs on a fence; in the background vapor erupts from A-2 Test Stand during the engine test

A Defining Image

NASA Stennis conducts a space shuttle main engine test on April 21, 2006, at the A-2 Test Stand. The test highlighted two anniversaries: 40 years since the first rocket engine test at NASA Stennis in April 1966 and 25 years since the first space shuttle mission, STS-1, in April 1981.

Image Credit: NASA/Stennis
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