How is This Possible - S4.E179

Do Aliens exist? His job is to find & analyse radio waves in space including try to find aliens, Lee Myung-hyun (Radio Astronomer). There are people who high school seniors every year? Best teacher Jo Jung-shik (English Teacher) & Kim Min-jung (Korean Teacher). Is there a name like that? Jeju MBC rookie, Lee Tta-kkeum (Reporter). Gosh, what a Jae-suk doppleganger! The main character of the hottest drama, Jung Sung-il (actor).