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Energetic particles explorer

series of four American research satellites

Pronunciation
/ˌɛnərˈʤɛdɪk ˈpɑrtəkəlz ɪkˈsplɔrər/
/ˌɛnəˈʤɛtɪk ˈpɑːtɪkəlz ɛkˈsplɔːrə/
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