
The space age began on 4 October 1957 when the Soviet Union launched the earth's first artificial satellite, Sputnik. Within four years the United States built upon preexisting foundations and created three separate space programs designed to meet the two primary challenges...

The space age began on 4 October 1957 when the Soviet Union launched the earth's first artificial satellite, Sputnik. Within four years the United States built upon preexisting foundations and created three separate space programs designed to meet the two primary challenges...