SCORE (Signal Communications by Orbiting Relay Equipment) was the world's first purpose-built communications satellite. Launched aboard an American Atlas rocket on December 18, 1958, SCORE provided the first broadcast of a human voice from space, the first successful use of the Atlas as a launch vehicle, and the second test of a communications relay system in space (after July's Pioneer 1), . It captured world attention by broadcasting a Christmas message via shortwave radio from U.S. President Dwight D. Eisenhower through an on-board tape recorder. The satellite was popularly dubbed "The Talking Atlas" as well as "Chatterbox". SCORE, as a geopolitical strategy, aimed to place the United States at an even technological par with the Soviet Union as a response to the Sputnik 1 and Sputnik 2 satellites.