Background When the United States began considering a piloted voyage to the moon, an enormous…
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Background Between Sputnik’s launching in October 1957 and the lunar landing in July 1969 America…
Background According to this document: The surveillance fences of SPACETRACK detect and track a large…
Background The Center for the Advancement of Science in Space (CASIS), a non-profit organization, is…
Background According to the document: “By the year 2000, an increasingly large portion of our…