Lunar Illumination
This page is the CodyCross answer for the clue below from Physics, Group 1889, Puzzle 3 (Lagrangian Method).
Question is: Lunar Illumination
and the answer is: MOONLIGHT
Word Meaning:
MOONLIGHT — (uncountable, also attributive) The light reflected from the Moon, which seems to emanate from it.
Definitions from Wiktionary.