id	author	title	date	pages	extension	mime	words	sentence	flesch	summary	cache	txt
cusj-13290	Lee, Seonyu; Kim, Heeju	Unveiling Dark Matter in a Galaxy: A Case Study of NGC 1068	2025	12	.pdf	application/pdf	5089	333	52	As the error bars do not overlap, the presence of dark matter is confirmed. INTRODUCTION In the 1930s, astronomer Zwicky introduced the concept of “dark matter”, a form of matter that interacts gravitationally but not with light, while studying the Coma Cluster.1 Later in the 1970s, Vera Rubin confirmed the existence of dark matter by revealing the flatness of galactic rotation curves.2 Despite accumulating evidence of dark matter’s existence, its nature remains one of the most significant unsolved mysteries in modern astrophysics.	cache/cusj-13290.pdf	txt/cusj-13290.txt