The International Astronomical Union (IAU) launched 2009 as

the International Year of Astronomy (IYA2009)

under the theme, The Universe, Yours to Discover.

UNESCO, Paris, France, January 15-16, 2009 -
IYA2009 Opening Ceremony.

The vision of the International Year of Astronomy 2009 is to help the citizens of the world rediscover their place in the Universe through the day- and night time sky, and thereby engage a personal sense of wonder and discovery. All humans should realize the impact of astronomy and basic sciences on our daily lives, and understand better how scientific knowledge can contribute to a more equitable and peaceful society.

The International Year of Astronomy (IYA2009) will be a global celebration of astronomy and its contributions to society and culture, highlighted by the 400th anniversary of the first use of an astronomical telescope by Galileo Galilei.