In 2009 we celebrate the 400th anniversary of Galileo's first observations of the universe through a telescope. In honor of this early event, the International Astronomical Union (IAU) and the United Nations have proclaimed 2009 as the International Year of Astronomy to spread awareness of astronomy’s contributions to society and culture, stimulate young people’s interest in science, portray astronomy as a global peaceful endeavor, and nourish a scientific outlook in society.

NASA invites YOU to join us in the celebration of IYA 2009. This website will be your portal to exciting NASA resources, events, and opportunities for involvement as we develop our program of regional and national IYA activities for students, teachers, and the public.