On December 6, 1999, The United Nations General Assembly declared World Space Week as an annual event celebration to be commemorated between October 4 and 10. The choice of dates was based on recognition of two important dates in space history: the launch of the first human-made Earth satellite, Sputnik 1, on October 4, 1957; and the signing of the Outer Space Treaty on October 10, 1967.[2]