World Space Week, October 4-10 annually, is the largest space event on Earth. More than 5,000 events in over 80 countries celebrated the theme “Space Unites the World” in 2018. The 2019 theme is “The Moon: Gateway to the Stars.”
“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