# The International Year of Astronomy 2009: A Commemoration of Galileo and Kepler In 2007, the 62nd General Assembly of the United Nations designated 2009 as the **International Year of Astronomy (IYA2009)** to celebrate the **400th anniversary of Galileo Galilei’s initial recorded astronomical observations through a telescope (1609)** and the publication of **Johannes Kepler’s influential […]
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