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We encourage widespread use of the IYA2009 logo by individuals and groups who organize or support IYA2009 activities. An IYA2009 «activity» is here understood to be an event, exhibit, performance, commercial or promotional product, print or electronic publication, or other creation intended to advance the aims of the IYA2009 as described elsewhere on this website.

In order to use the IYA2009 logo you need to provide contact information and a brief description of your IYA2009 activity/product to your National Node Chair, including the URL of your IYA-related website, if applicable, as well as time and place. If the country in which you are organizing an IYA activity/product does not have an IYA2009 National Node Chair, or if the activity/product is of an international nature, you will provide the required information to the IAU’s IYA2009 Secretary instead.

If you use the IYA2009 logo on a website or in any other electronic publication that supports hyperlinks, you should link to www.astronomy2009.org as well as to your National Node’s IYA2009 website, if applicable.

As a rule of thumb, the IYA2009 logos must not be modified. Please contact the IYA2009 Secretariat in case of doubt (please submit your graphics)[1].