Astronomy Magazine
The U.S. satellite program was evolving in the early 1950s, first beginning at as joint Army-Navy venture called Project Orbiter, then becoming a wholly Navy civilian effort with Project Vanguard. But when the successful launch of Sputnik in October 1957 was followed by the explosion of the Vanguard rocket on the launchpad in December of Continue reading "March 31, 1970: Explorer 1 burns up" The post March 31, 1970: Explorer 1 burns up appeared first on Astronomy Magazine .
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