The International Year of Astronomy 2009 (IYA2009) will be a global celebration of astronomy and its contributions to society and culture, stimulating worldwide interest not only in astronomy, but in science in general, with a particular slant towards young people. IYA2009 is an activity for the citizens of Planet Earth. It aims to convey the excitement of personal discovery, the pleasure of sharing fundamental knowledge about the Universe and our place in it and the value of the scientific culture.

The vast majority of IYA2009 activities will take place on several levels: locally, regionally and nationally. Some 70 countries are now participating in international coordination activities and making plans for their own activities in IYA2009.

International Activities

At the global level the International Astronomical Union (IAU) will play a leading role as a catalyst and coordinator. While the IAU will organize a small number of truly global or international events such as the Opening and Closing Events, the main activities will take place at local, regional or national levels and will be coordinated by the IYA2009 National Nodes in close contact with the IAU.

Cornerstone Projects

The International Astronomical Union is planning a series of Cornerstone Projects. For further details, see http://www.astronomy2009.org/globalprojects/cornerstones/