Synonyms:
luminary, leading_light, guiding_light, notable, notability
Meaning: a celebrity who is an inspiration to others; "he was host to a large gathering of luminaries"
Usage examples
Also it would be absurd to say that a body of so great a bulk is corrupted by the mere absence of the luminary.
He turned first to the shiny goddess, who seemed to look so softly and critically at his doings, then to the disappearing luminary on the other hand, as he began:
For if light were a body, it would follow that whenever the air is darkened by the absence of the luminary, the body of light would be corrupted, and its matter would receive a new form.