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International Ultraviolet Explorer

astronomical research satellite built in the 1970s as a cooperative project of the U.S. National Aeronautics and Space Administration (NASA), the Science and Engineering Research Council of the United Kingdom, and the European Space Agency (ESA). Launched in January 1978, the IUE functioned until it was shut down on September 30, 1996, and was one of the most productive astronomical instruments in history.

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Encyclopedia Britannica, 2008. Encyclopedia Britannica Online.
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