This document provides details on key events and missions in the space race between the Soviet Union and United States from 1957 to 1973. Some of the notable events included the first artificial satellite (Sputnik 1), first animal in space (Laika on Sputnik 2), first US satellite (Explorer 1), creation of NASA, first US lunar probe (Pioneer 4), first photos of Earth from space (Explorer 6), first weather satellite (Tiros 1), first manned Soviet (Vostok 1) and US (Mercury) spaceflights, first spacewalks (Voskhod 2), first docking of two manned spacecraft (Soyuz 4 and 5), first lunar soft landings (Luna 9 and