From the John Templeton Foundation:
Philosopher Immanuel Kant famously remarked that two things filled him with awe and wonder: “the starry heaven above me and the moral law within me.” While some will understand this meaning, the nature of awe remains something of a mystery to most. “The field of emotion research is almost silent with respect to awe,” note psychologists Dacher Keltner and Jonathan Haidt in a 2003 paper. “Few emotion theorists consider awe in their taxonomies, and those who do have done little to differentiate it from other states.”