In this Sept. 27, 2012 photo, radio antennas face the sky as part of one of the worlds largest astronomy projects, the Atacama Large Millimeter/submillimeter Array (ALMA) in Chajnator in the Atacama desert in northern Chile. Linked as a single giant telescope, the radio antennas pick up wavelengths of light longer than anything visible to the human eye and colder than infrared telescopes, which are good at capturing images of distant suns but miss planets and clouds of gases from which stars are formed. (AP Photo/Jorge Saenz)
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