"The General Assembly declares 4 to 10 October World Space Week to celebrate each year at the international level the contributions of space science and technology to the betterment of the human condition"

UN General Assembly resolution, 6 December 1999


What is World Space Week?

It is an international celebration of science and technology, and their contribution to the betterment of the human condition. The United Nations General Assembly declared in 1999 that World Space Week will be held each year from October 4-10. These dates commemorate two events:

October 4, 1957: Launch of the first human-made Earth satellite, Sputnik 1, thus opening the way for space exploration
October 10, 1967: The signing of the Treaty on Principles Governing the Activites of States in the Exploration and Peaceful Uses of Outer Space, including the Moon and Other Celestial Bodies.

Where and how is World Space Week celebrated?

It is open to all. Government agencies, industry, non-profit organizations, teachers and individuals can organize events to celebrate World Space Week. The week is coordinated by the United Nations with the support of the World Space Week Association (WSWA). The WSWA leads a global team of National Coordinators, who organize events within their own countries.
What are the goals of World Space Week?

Educate people around the world about the benefits that they receive from space
Encourage greater use of space for sustainable economic development
Demonstrate public support for space programs
Excite young people about science
Foster international cooperation in space outreach and education

(from http://www.worldspaceweek.org)

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Tried it in IE yet? Chrome and Firefox do not work joining a challenge

Amazing challenge! still not sure who will win