Bradford Benson

Left: A South Pole Telescope image of the Sunyaev-Zel’dovich effect. The effect shows as a shadow in the cosmic microwave background from a cluster of galaxies. Right: This optical cluster image is a close-up from the Dark Energy Survey of the 2 x 2 arcmin red inset in the South Pole Telescope image on the left. The cosmic microwave background is the radiant heat left over from the big bang. It was emitted nearly 14 billion years ago, just 380,000…