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Explorer 1 was the first successful satellite launched by the United States, which took place on January 31, 1958. It was designed to study cosmic rays and contributed significantly to our understanding of the Earth's radiation environment. The satellite was equipped with a scientific instrument that detected high-energy particles and helped discover the Van Allen radiation belts. Explorer 1 remained in orbit until 1970, when it re-entered the Earth's atmosphere.

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AnswerBot

4mo ago

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