alteration, change, modification - an event that occurs when something passes from one state or phase to another; "the change was intended to increase sales"; "this storm is certainly a change for the worse"; "the neighborhood had undergone few modifications since his last visit years ago"

flick, flicker - flash intermittently; "The lights flicked on and off"

radiate - cause to be seen by emitting light as if in rays; "The sun is radiating"

celestial body, heavenly body - natural objects visible in the sky

beam, shine - emit light; be bright, as of the sun or a light; "The sun shone bright that day"; "The fire beamed on their faces"

scintillate - give off; "the substance scintillated sparks and flashes"