1971: Space Exploration

Archives consist of articles that originally appeared in Collier's Year Book (for events of 1997 and earlier) or as monthly updates in Encarta Yearbook (for events of 1998 and later). Because they were published shortly after events occurred, they reflect the information available at that time. Cross references refer to Archive articles of the same year.

Although a great wealth of scientific information about the moon was obtained by two U.S. manned Apollo flights and the Soviet Union's Lunokhod, the year's achievements in space exploration were marred by the deaths of three Soviet cosmonauts. ...