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2009 (MMIX) was a common year starting on Thursday of the Gregorian calendar, the 2009th year of the Common Era (CE) and Anno Domini (AD) designations, the 9th year of the 3rd millennium and the 21st century, and the 10th and last year of the 2000s decade.
2009 was designated as the International Year of Astronomy[1][2] by the United Nations to coincide with the 400th anniversary of Galileo Galilei's first known astronomical studies with a telescope and the publication of Astronomia Nova by Johannes Kepler.[3] It was also declared as the International Year of Natural Fibres[4] by the United Nations General Assembly, as well as the International Year of Reconciliation and the Year of the Gorilla (UNEP and UNESCO).[5]
- ^ "News Release – IAU0606: The International Astronomical Union announces the International Year of Astronomy 2009". International Astronomical Union. October 27, 2006. Archived from the original on September 19, 2008. Retrieved November 1, 2008.
- ^ "The International Year of Astronomy 2009". IYA2009. Archived from the original on November 3, 2008. Retrieved November 1, 2008.
- ^ "International Astronomical Union | IAU". Archived from the original on November 11, 2022. Retrieved November 11, 2022.
- ^ United Nations General Assembly Session 61 Resolution 189. International Year of National Fibres, 2009 A/RES/61/189 December 20, 2006. Retrieved 2008-07-15.
- ^ "Year of the Gorilla". Convention on the Conservation of Migratory Species of Wild Animals. 2009. Archived from the original on September 14, 2014. Retrieved January 1, 2023.
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