Journal of Astronomy and Space Science is an international journal devoted to the publication of fundamental and applied investigations on all aspects of astronomy, space science and space technology. It is published quarterly and is the official publication of the Korean Space Science Society. This Journal is open access journal, consequently, articles are free for all users to read and use. Manuscripts must be prepared according to the instructions that follow; those that do not conform or are incomplete may be returned for correction prior to review. Each article published is assigned a unique DOI that serves to identify the article in a digital environment.