World Space Week is an international annual celebration of space science and technology, observed during the week of 04-10 October. The commencing and concluding dates of world space week recalls two important dates in space history.
04 October, 1957: Journey to space started with the launch of the first man-made Earth satellite, Sputnik 1.
10 October, 1967: The signing of the treaty on principles governing the activities of states in the exploration and peaceful uses of outer space, including the Moon and other celestial bodies.
By UN Resolution of 06 December 1999, the General Assembly proclaimed 04 to 10 October as World Space Week, to celebrate the contributions of space science and technology to the betterment of the human condition. Every year a theme is selected by the World Space Week Association Board of Directors in close coordination with the UN Office of Outer Space Affairs. The theme provides a focused outlook to World Space Week celebrations for that year. As in previous years, Vikram Sarabhai Space Centre, the lead centre of ISRO, coordinates World Space Week activities in 2015. Various events are organised in association with Liquid Propulsion Systems Centre (LPSC) and ISRO Inertial Systems Unit (IISU).