Night falls over radio telescope dishes of the KAT-7 Array at the proposed South African site for the Square Kilometre Array (SKA) telescope near Carnavon in the country's remote Northern Cape province in this long exposure picture taken May 17, 2012. The SKA board announced on Friday that South Africa and Australia will share the location of the world's largest radio telescope. Picture taken May 17, 2012. REUTERS/Mike Hutchings (SOUTH AFRICA - Tags: SCIENCE TECHNOLOGY TPX IMAGES OF THE DAY)