English Korean 2008년 NASA 50주년 기념 특별강연을 하는 스티븐 호킹 applies to jurisdiction: United States of America determination method: work of the federal government
DescriptionStephenhawking2008nasa cropped.jpg English: StephenHawking giving a lecture for NASA's 50th anniversary Date 21 April 2011 Source File:Stephen hawking