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File photo taken on August, 2011 of "El Chaco" meteorite in Gancedo, Chaco province, Argentina, 1100 km north of Buenos Aires. The 37 ton meteorite fell some 4.000 years ago and was unearthed on July 8, 1980 in an area called Piguen Nonralta ("Field of Heaven" in Guaycuru indigenous language). Argentinian artist Nicolas Goldberg and French-born artist Guillermo Faivovich have the project to take "El Chaco" to be exhibited in Documenta 13, a contemporary art fair in Kassel, Germany on September 2012. AFP PHOTO / GEDEON PICASO (Photo credit should read GEDEON PICASO/AFP via Getty Images)

File photo taken on August, 2011 of "El Chaco" meteorite in Gancedo, Chaco province, Argentina, 1100 km north of Buenos Aires. The 37 ton meteorite fell some 4.000 years ago and was unearthed on July 8, 1980 in an area called Piguen Nonralta ("Field of Heaven" in Guaycuru indigenous language). Argentinian artist Nicolas Goldberg and French-born artist Guillermo Faivovich have the project to take "El Chaco" to be exhibited in Documenta 13, a contemporary art fair in Kassel, Germany on September 2012. AFP PHOTO / GEDEON PICASO (Photo credit should read GEDEON PICASO/AFP via Getty Images)
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