This photo taken May 3, 2013, shows a longtime exposure showing the stars in the sky over a cross of "Panagia Chrisospiliotissa", a Christian Orthodox monastery outside of capital Nicosia, Cyprus. The number of Americans who don't affiliate with a particular religion has grown to 56 million in recent years, making the faith group researchers call "nones" the second-largest in total numbers behind evangelicals, according to a Pew Research Center study released Tuesday, May 12, 2015. (AP Photo/Petros Karadjias, File)