Synonyms for the term "limb astronomy" relate to the study and observation of celestial bodies and phenomena that occur near the outer edges or boundaries. One synonym is "peripheral astronomy," which emphasizes the examination of objects situated at the fringes of the celestial sphere. Another alternative is "edge astronomy," encompassing the analysis of cosmic elements occurring near the visible limits of celestial bodies. Furthermore, "boundary astronomy" describes the examination of astronomical features forming the demarcation between different regions of celestial bodies. These synonyms encapsulate the exploration of celestial objects and events situated at the outskirts or edges of the astronomical realm, allowing astronomers to gain a comprehensive understanding of the universe in its entirety.