"The Sachs Wolfe effect states that light from the cosmic microwave background—radiation present throughout the universe that was created by the Big Bang—would become more blue in color as it passed through the gravitational fields of lumps of matter. This effect was later used as a test for dark energy when scientists realized that they could compare that radiation’s temperature throughout our local universe with maps of where galaxies are located. If dark energy existed, their calculations showed, the maps should correspond, with the radiation's temperature being dependent on the location of galaxies. That is exactly what they found." New analysis rules out contamination in the data: http://goo.gl/zwXEd - Adriano

an Instagram soon... "The phone box-sized Dark Energy CAMERA or DECam is mounted on the 4m Victor Blanco telescope at the Cerro Tololo Inter-American Observatory in Chile's Atacama desert. DECam is particularly sensitive to red and infrared light, to better study cosmic objects as distant as eight billion light-years away. The Dark Energy Survey's 570-million-pixel camera will scan some 300 million galaxies in the coming five years." http://www.bbc.co.uk/news... - Adriano