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==Mission Results==
As a result of a malfunction in the Delta 3000 booster rocket in which its main engine shut off slightly early, DE-2 was placed into a slightly lower orbit than was anticipated. This was not a serious problem, however, and the spacecraft had lasted its expected lifespan when it re-entered the Earth's atmosphere on February 19, 1983. DE-1, being in a higher orbit, continued to collect data until 1991, when the
==References==
<references/>
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