What happened after the Big Bang? We weren't there to see it, of course, but scientists study leftover radiation from the cataclysmic cosmic event—known as the Cosmic Microwave Background (CMB)—to piece together the tale. For four years, the Planck satellite mapped the CMB at the highest possible level of precision. This week, Planck scientists released the mission's final data, ending an era in cosmology and giving scientists even more clues into the very early moments of our universe. Click through our gallery to learn more about this groundbreaking mission. . . . . . . . . . #NASA #ESA #europeanspaceagency #planck #science #sattelite #learn #education #space #universe #bigbang #infographic #graphic #design #cosmos #cmb #data