big changes

The Space Race was a 20th-century (1955–1972) competition between two Cold War rivals, the Soviet Union (USSR) and theUnited States (US), for supremacy in spaceflight capability. The technological superiority required for such supremacy was seen as necessary for national security, and symbolic of ideological superiority. The Space Race spawned pioneering efforts to launchartificial satellites, unmanned probes of the Moon, Venus, and Mars, and human spaceflight in low Earth orbit and to the Moon Read more