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Hoag's Object is a ring galaxy known for its astronomically unusual structure. First discovered in 1950 by Arthur Hoag, this galaxy is characterized by a spherical core at its center, surrounded by an almost perfectly symmetrical ring of stars. This object has raised questions about galaxy formation processes and structural evolution, making it a subject of study in the field of astrophysics. Definition and Discovery Process Hoag's Object is a ring galaxy located in the Serpens constellation, ap

ARP 147 is one of the interacting galaxy pairs featured in the Atlas of Peculiar Galaxies, compiled by Halton Arp and first published in 1966. This system is particularly notable for its ring-shaped galaxy structure. Located approximately 430 million light-years away in the direction of the Cetus constellation, it represents one of the rare morphological forms resulting from galactic collisions. The system consists of two distinct galaxies, one of which has evolved into a ring structure as a res