Explorer 1: The First U.S. Satellite

World Space Week 2020 will celebrate the impact of satellites on humanity from Oct. 4 to Oct. 10. Find out how to celebrate here and check out the history of Explorer 1, the first U.S. satellite ever to fly, below!

Explorer 1 was the United States’ first satellite in space. The 1958 launch of the satellite — twice the size of a basketball — was an important moment for the country, as the Space Race with the Soviet Union was just beginning.

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